David Rittenhouse maintained meteorological observations in two volumes that span the first twenty years of the early national period (5/6/1784-9/30/1805). Alongside weather conditions, Rittenhouse regularly documents temperatures, the conditions of roads, expenses, and accounts. These volumes may interest researchers studying meteorological conditions as well as other regional phenomena such as eclipses and the Yellow Fever epidemic.

Meteorological observations, 1784-1805
 
David Rittenhouse maintained meteorological observations in two volumes that span the first twenty years of the early national period (5/6/1784-9/30/1805). Alongside weather conditions, Rittenhouse regularly documents temperatures, the conditions of roads, expenses, and accounts. These volumes may interest researchers studying meteorological conditions as well as other regional phenomena such as eclipses and the Yellow Fever epidemic.

As a surgeon, Thomas Hewson Bache provides an on-the-ground view of the Civil War in a diary, maintained throughout 1862 (1/1-11/28), that traverses the American North and South. The first half of the journal documents his life at camps in the South, including Baton Rouge, Cape Hatteras, New Orleans, and Vicksburg, and, starting in late-September, he returns to the northeast, first to New York and then to Philadelphia. In addition to providing a glimpse at soldier camps—especially in Baton Rouge (8/8)—Bache records at least one instance of Yellow Fever. Read together with the Alexander Dallas Bache diary, also from 1862, this volume furnishes researchers with new insights into the Civil War as it was experienced by those on its battlefields.
 

Hiltzheimer provides a detailed and textured account of the young republic through scrupulous attention to the Constitutional Convention, election and reelection of George Washington, the Whiskey Rebellion, the Wyoming Valley incident, and the ascension of John Adams. Thanks to his career in Philadelphia politics (elected as a representative of the city in the Assembly in 1786), he furnishes first-hand accounts of George Washington, the funerals of Benjamin Franklin and David Rittenhouse, and numerous entries devoted to Pennsylvania luminaries including John and Clement Biddle, Joseph Morris, Levi Hollingsworth, Henry Drinker, and Timothy Matlack.
 
Hiltzheimer's journal also records family and personal details, including plague of locusts in 1766 and 1783, a great fire in 1794, and the death of his wife (3/11/1790) and loss of both his son and daughter to Yellow Fever (11/28/1793 and 12/29/1794 respectively). Indeed, his account of the Yellow Fever epidemic in Philadelphia is particularly exhaustive, with daily records of burials between 9/19-12/31/1793, as well as further accounts during the 1797 crisis, during which he ultimately contracted the disease that led to his death in September 1798.

The Jacob Hiltzheimer Diary spans 28 volumes and offers insight into the social life and customs of Philadelphia between the late colonial period to the early republic (1765-1798). Hiltzheimer describes a wide range of events, such as sleigh riding to ice skating to attending a large celebration of King George's Birthday on the banks of the Schuylkill with over 380 Philadelphians (before Independence). During the imperial crisis, Hiltzheimer's observations provide an interesting perspective on the events happening within the city, including the repeal of the Stamp Act, French troop movements, Cornwallis's surrender, and ensuing mob violence against suspected loyalists (e.g. 10/24/1781).
 
Hiltzheimer provides a detailed and textured account of the young republic through scrupulous attention to the Constitutional Convention, election and reelection of George Washington, the Whiskey Rebellion, the Wyoming Valley incident, and the ascension of John Adams. Thanks to his career in Philadelphia politics (elected as a representative of the city in the Assembly in 1786), he furnishes first-hand accounts of George Washington, the funerals of Benjamin Franklin and David Rittenhouse, and numerous entries devoted to Pennsylvania luminaries including John and Clement Biddle, Joseph Morris, Levi Hollingsworth, Henry Drinker, and Timothy Matlack.
 
Hiltzheimer's journal also records family and personal details, including plague of locusts in 1766 and 1783, a great fire in 1794, and the death of his wife (3/11/1790) and loss of both his son and daughter to Yellow Fever (11/28/1793 and 12/29/1794 respectively). Indeed, his account of the Yellow Fever epidemic in Philadelphia is particularly exhaustive, with daily records of burials between 9/19-12/31/1793, as well as further accounts during the 1797 crisis, during which he ultimately contracted the disease that led to his death in September 1798.