- Islandora Repository
- Text Collection
- Miscellaneous Manuscripts Collection, 1668-1996
- Pennsylvania Charter of Privileges
- Petition to [John Adams] President of the United States from sundry female inhabitants of Philadelphia...
- Philadelphia Bar Association to General Lafayette, 1824
- Philadelphia Chamber of Commerce to the President of the United States, 1826 November 4
- Table of contents for "Ahtna Texts Recorded in Copper Center, Alaska"
- Tesla, Nikola to Paul Dana, 1895 January 16
- Tesla, Nikola to Paul Dana, 1901 February 14
- Tesla, Nikola to Paul Dana, 1903 May 23
- Tesla, Nikola to Paul Dana, 1903 May 27
- To the public. ...Conditions...upon which said annual [Magellanic] premiums will be awarded. ...Published by order of the society, at Philadelphia, the 19th day of November, 1786
- Tyndall, John to Mrs. Faraday, 1868 February 6
- United States Senate[,] March 5, 1863. Sir, A bill to incorporate the "National Academy of Sciences" has been introduced by me in the Senate