Born in Schiffdorf (near Bremerhafen), John Bohlen became one of Philadelphia's most prominent merchants at the turn of the nineteenth century. Running a profitable concern in partnership with his brother Bohl (1754-1836), John Bohlen imported commodities from their native Holland. Thanks to an insatiable American thirst for gin, Bohlen amassed an immense fortune that enabled him to travel in the same social circles as Stephen Girard and others among the mercantile elite and to win a spot in 1816 as one of the Directors of the Bank of the United States. By the time of his death, he was one of only eleven Philadelphians whose personal estates exceeded one million dollars in value. The Bohlen Collection contains a scant ten letters that appear to have been retained, as much as anything, for their autograph interest. Although they shed relatively little light on the life of John Bohlen, they do offer interesting glimpses into the personalities of Bohlen's famous correspondents, including Stephen Girard, Francis Scott Key, Meriwether Lewis, Virgil Maxcy, Oliver Hazard Perry, and Timothy Pickering.

A collection of letters, legal papers and financial records of three generations of the prominent Philadelphia family. Spanning 1745-1955, detailed are the legal cases and political advocacy work of John Kintzing Kane (1795-1858), Robert Patterson Kane (1827-1906), and Francis Fisher Kane (1866-1955). Also includes correspondence, architectural drawings, and photograph albums of the Cope family. Robert Patterson Kane's daughter Eliza Middleton Kane (1863-1952) married the Philadelphia architect Walter Cope (1860-1902) in 1893. The APS papers of Elisha Kent Kane are in call no. B K132.

A collection of business and personal papers of three generations of the prominent Philadelphia Jewish family from 1750-1974. Business records include trade and land transactions (some in Yiddish) of the Gratz brothers, Barnard and Michael (1750-1804) with the business continued by Michael's sons: Simon, Hyman, Joseph, Jacob, and Benjamin (1791-1861). Personal correspondence are primarily letters to Rebecca Gratz from her sisters Rachel and Sarah (1795-1867) with later correspondence to Rachel's children: Horace and Sara Moses (1832-1879). Contains a small group of French letters related to Napoleon III, collected by family member Miriam Fox, and some heirloom artifacts.