The first volume is minutes of the commissioners for determining the line between Pennsylvania and Maryland, which was copied by George M. Justine in 1842 from an "authenticated" copy owned by Ferdinand R. Hassler. The second volume contains receipts (62 items) for money spent by the Penn family for the survey.

Copied by Mrs. Deborah Norris Logan from original letters and papers in her family, with additions by J. Francis Fisher and Redmond Conyngham. Includes Logan's correspondence with William Penn, Hannah Callowhill Penn, Isaac Norris, Governor George Clarke of New York, Governor William Gooch of Virginia, and Governor George Thomas of Pennsylvania. Contains materials regarding early Philadelphia and Indian and colonial affairs.

A New Hampshireman and one of the most famous military figures in colonial America, Robert Rogers saw brief service in the militia during King George's War, but found fame as a commander of rangers during the Seven Years War. An efficient leader and crack woodsman, Rogers gained a hard driving reputation in leading his rangers against the Abnaki Indians at St. Francis Quebec, and for service at Quebec, Montreal, Fort Pitt, and Detroit. After voyaging to England in 1765 to advance his career, he was appointed to the command of Fort Michilimackinac at the tip of the southern peninsula of Michigan, but was recalled less than two years later for impropriety and suspected treason. He later offered his services to George Washington before serving in the Loyalist Queen's Rangers. As Commander of Fort Michilimackinac from 1766-1768, Rogers sat at the critical nexus of the British fur trade, the point connecting the vast interior of the western Great Lakes and northern plains to the trading centers at Montreal and elsewhere in the east. His "Estimate of the Fur and Peltry Trade in the District of Michilimackinac, according to the bounds and limits, assign'd to it by the French, when under their government: together with an account of the situation and names of the several out-posts" is, as the title suggests, an overview of this most important area of economic activity. Rogers gave this manuscript to Jonathan Carver (the man he has sent on an expedition to find the Northwest Passage), who relayed it to Thomas Barton of Lancaster, Pa., who, in turn, sent it to the American Philosophical Society. It was received at the APS and referred to the Committee on Trade and Commerce on December 20, 1768.

Much of the material in both volumes is printed in Charter to William Penn, and Laws of the Province of Pennsylvania . . . (Harrisburg, 1879). The first volume, prepared possibly for James Logan, contains copies of Charles II's grant to William Penn of the Lower Counties, 1683, an act of the Privy Council, 1705, the charter of Pennsylvania of 1701, acts of the Assembly, 1682-1719.

Catalogue and Tracts relating to Pennsylvania, 1681-1770, collected by Joshua Francis Fisher (presented to APS in 1839), contains: 1. "Catalogue of Printed Tracts relating to the Political History of . . . Pennsylvania, 1681-1770," with an introduction by Fisher (20 pp.); 2. (Sir William Keith), "The Life and character of a strange `He Monster' lately arrived in London from an English Colony in America, . . .," n.d. The "Monster" is identified as Andrew Hamilton by Walker Lewis, William and Mary Quarterly 38 (1981): 269-294; 3. A modest apology for the eight members. (3 pp.); 4. Petitions of merchants and others to the King for the safety of the Province and against the Quakers, n.d. (4 pp.).

This volume includes messages and proclamations of governors of the province, a petition to the King from the province of Georgia [n.d.], the draft of an address of the University of the State of Pennsylvania to George Washington (1781), a letter from Arthur Lee to Alexander Wedderburn (1774), letters of Timothy Matlack to Abiel Holmes (1819), and George Wythe's draft resolutions (1775).

Between 1764 and 1781, the Scots surveyor George Gauld was assigned by the British Admirality to chart the waters of the Gulf Coast off British West Florida, an area that extended from New Orleans to the modern-day Florida. In 1773, Gauld submitted some of his findings to the APS, probably in hopes of having them published in the Transactions, and although these were not published, they became one of the first mansucripts entered into the Society's collections. Contains occasional brief references to Native peoples of the areas described. The Gauld manuscript also includes an extract of a letter from John Lorimer to Gauld, 1772, and a sketch of the Middle and Yellow Rivers of West Florida by Thomas Hutchins. When it was received at the APS, it was endorsed: "This long uninteresting Paper can hardly obtain a Place in the Transactions of a Philosophical Society. It should however be preserved in the Files for the Use of Historians or map makers."

This volume describes the boundary dispute between William Penn and Baron Cecil Calvert Baltimore over land in Maryland, Pennsylvania, and the counties of Newcastle, Kent, and Sussex.

This volume contains approximately 175 letters written by Thomas Penn and Richard Penn on public business. A few are copies of letters by James Hamilton, a member of the Provincial Council and lieutenant governor of Pennsylvania, and by or to Abraham Taylor.

The James S. and Frances M. Bradford Collection contains a wealth of letters to and from Polly Stevenson Hewson, intimate friend of Benjamin Franklin. At the heart of the collection are approximately 40 letters from Mary Stevenson to Franklin with a smaller number in return. Friendly, increasingly intimate, these provide a glimpse of the domestic life of Franklin and his warm personal relations with the Stevensons and Hewsons. Among the noteworthy individual items is the manuscript "Craven Street Gazette" (Sept. 22-26, 1770), the mock newspaper Franklin produced while in London. The collection also contains a series of unrelated miscellaneous manuscripts that includes correspondence from William Bradford, Patrick Henry, and George Washington.

Correspondence from Charles Mason and Jeremiah Dixon to Thomas Birch, and Nevil Maskelyne to Charles Mason, relating to the survey, and the transits of Venus (1761,1769).

David Rittenhouse (1732-1796) was one of the most prominent American men of science of the 18th Century. A skilled instrument maker, Rittenhouse was the an astronomer, playing a major role in recording the 1769 Transit of Venus, among many accomplishments. Rittenhouse also conducted important survey work for the state of Pennsylvania, establishing the state's western border, as well as overseeing the completion of the Mason-Dixon survey. In addition to his scientific endeavors, Rittenhouse's work for American independence places him among the important founding fathers. Subordinating his scientific interests for the greater good of Pennsylvania during the American Revolution, Rittenhouse served as a member of both the Pennsylvania Assembly and the Pennsylvania Constitutional Convention, and held powerful positions on the Pennsylvania Council of Safety and the subsequent Committee on Safety. Rittenhouse also served as the first director of the United States' Mint, at the behest of President George Washington. Rittenhouse was elected to the American Philosophical Society in 1768 and played a major role in placing the Society on the scientific map. He held many positions in the Society, including serving as its President from 1791 until his death in 1796. The Rittenhouse papers span 1774 to 1932, and consist of 61 items, over 0.25 linear feet. The collection is comprised mainly of correspondence, but also includes receipts, genealogies and broadsides.

An early settler and prominent citizen in the Moravian heartland near Bethlehem, Pennsylvania, Timothy Horsfield was named justice of the peace when Northampton County was formed out of Bucks in 1752, and was one of those given responsibility for the defence of the local white and Christian Indian populations during the French and Indian War. The Horsfield Papers offer a window onto the tumultuous history of northeastern Pennsylvania during the 1750s and 1760s. Comprised largely of correspondence and related documents between Horsfield, William Parsons, and provincial and military authorities, the collection includes important information on the Native tribes' actions (previously described as "Indian assaults") in the region in 1756 and 1757 and the military and diplomatic response of settlers.

Partly copied by Redmond Conyngham from the state records and part from and with the reports of Judge Gibson and Judge Thomas Cooper. Relates to dispute over Wyoming valley lands between Connecticut and Pennsylvania. Includes correspondence of Lord Amherst, John Armstrong, Jr., Charles Biddle, John Boyd, Zebulon Butler, Thomas Cooper, Thomas Fitch, John Franklin, James Hamilton, Joseph Hamilton, William Montgomery, John Penn, Richard Rush, Jonathan Trumbull, and Roger Wolcott.

From the Sugar Act of 1764 through the Tea Act of 1773, the British Parliament imposed a variety of taxes upon their American colonies in an effort to raise revenue to offset the enormous debts incurred during the Seven Years' (French and Indian) War. Far more efficiently than raising revenue, these duties raised the indignation of the colonits, contributing more than their share to the alienation that fueled the independence movement The two volumes that comprise the Pennsylvania Stamp Act and Non-Importation Resolutions Collection contain 34 manuscript and printed items relating to the political crisis over taxation on goods imported into the American colonies between 1765 and 1773, with a focus on Philadelphia. The first volume is concerned exclusively with agitation over the Stamp Act of 1765 and its repeal, while the second volume relates more specifically to the Non-Importation agreements of the 1760s, the Townshend Duties, and the Tea Act of 1773. Among these are letters of Governor John Penn, correspondence between the Sons of Liberty at Philadelphia and those of New York, 1766, an address of the committee of Boston merchants to a committee of Philadelphia merchants, 11 August 1768. Among the more dramatic letters are those from John Hughes, the would-be Stamp Officer for Pennsylvania who resigned bis commission in the face of public protest, and a seies of threatening letters addressed to James and Drinker, consignees for the sale of tea in Pennsylvania in 1773.

Containing over 4 linear feet of letters and documents, the Franklin-Bache Papers comprises the second largest collection of letters and documents relating to Benjamin Franklin in the APS Library. Although the scope of the collection is broad, including materials from the time of Franklin's arrival in Philadelphia to his death, the heart of the collection documents the period of Franklin's ministry in France (1776-1785) and his diplomatic efforts to win financial and military support for the revolutionary cause, as well as less intensive coverage of his ministry in England before the Revolution. Franklin's correspondence with American and French officials, financiers (personal and otherwise), and savants provides tantalizing details on the social context of Franklin's ministry in France, his intellectual life, and his growing celebrity. Much of the correspondence documents the efforts to convince French officials early in the war to support the American cause, but there is valuable material relating to the peace negotiations as well. The collection is equally rich in personal correspondence, including a rich set of letters from Mary Stevenson Hewson, Georgiana Shipley, Catherine Ray Greene, Jane Mecom, Deborah Franklin, and a number of Franklin's other relatives. The collection is arranged chronologically.

The only son of Benjamin Franklin, William Franklin served as Royal Governor of New Jersey during the critical years between 1762 and 1776. An ardent Loyalist, William split with his father over their political differences in the early days of the Revolution, and after enduring two years of imprisonment, became a leader in the Loyalist cause. He settled in London in 1782, where he worked as an agent for Loyalist claims. The William Franklin Papers are a miscellaneous assemblage of letters and documents, dealing largely with Franklin's years as Royal Governor of New Jersey. The majority of the letters are perfunctory, however they provide some information on Franklin's land holdings in New Jersey and the Ohio country. The collection includes two letters relating to Franklin's imprisonment in Connecticut during the Revolution, two affectionate letters to his sister Sarah, and one to his son William Temple Franklin.

These letters relate principally to provincial business and comment on the Indians of Pennsylvania, the French and Indian War, a survey of the Maryland-Pennsylvania boundary, and the Stamp Act. Correspondents include James Burd, Jeremiah Dixon, Joseph Galloway, Humphry Marshall, Charles Mason, Edward Shippen of Lancaster, and Edward Shippen, Jr.

George Weedon (1734-1793) was Captain in the French and Indian War and a General in the American Revolutionary War. Between the two conflicts he was a prominent citizen of Fredericksburg, Virginia, operating a tavern in that city which served as a meeting place for George Washington, Thomas Jefferson, Patrick Henry, John Marshall and others to discuss politics and the future course of the American colonies.

Reports on conferences and treaties with the Indians and miscellaneous Indian affairs in Pennsylvania, with emphasis upon the French and Indian War. Correspondents include: John Armstrong Thomas Barton Edward Braddock Daniel Claus George Croghan James Hamilton James Logan Hugh Mercer Andrew Montour Robert Hunter Morris Robert Orme Ferdinand J. Paris Thomas Penn Horatio Sharpe Joseph Shippen William Shirley John Stanwix Robert Stobo William Trent Conrad Weiser