The Rosenbach offers virtual and on-site programs, including tours, Courses, Book Clubs, and a free weekly web series called Biblioventures, all inspired by its peerless collection.

The period of colonial settlement is well represented by early accounts and important religious tracts, particularly those relating to the various missions of Native Americans, as well as a collection of Indian Captivity Tales.

The American Revolution is documented with over one hundred letters written by George Washington, the original manuscript resolution of the Continental Congress, a superb collection of documents by signers of the Declaration of Independence, Commodore Barry's ship papers, which outline the beginnings of the American navy, and a set of Franklin's Poor Richard's Almanacks, including the only known surviving copy of the 1733 first edition, first printing.

Of particular importance is the material dealing with the Pacific Northwest, including diaries of the Oregon pioneers and the document signed by Andrew Johnson authorizing Seward to negotiate for the purchase of Alaska.

Chronologically this collection begins with a fine group of English literary manuscripts from the 15th century including Thomas Hoccleve's poems (1410) which contain a celebrated portrait of Chaucer.

There are manuscripts of Walter Scott, William Wordsworth, Charles Lamb, Shelley and Keats (including a celebrated love letter to Fanny Brawne) and the only surviving fragment of Fitzgerald's Rubaiyat of Omar Khayyam.

Lewis Carroll is represented by over six hundred letters, early drawings, presentation books, photographs and his own first-edition copy of Alice in Wonderland.

Other manuscripts include the work of Oscar Wilde, Aubrey Beardsley, Arthur Conan Doyle, Joseph Conrad and Dylan Thomas.

The archive of book illustration contains many fine medieval illuminations and drawings by the great 18th-century French masters such as François Boucher, Jean-Honoré Fragonard, Jean-Baptiste Le Prince and Hubert Gravelot.

A comprehensive collection of English silver and gold from the 17th and mid-18th centuries includes masterworks by Paul Storr, Hester Bateman and a choice group of items made for the British royal family.

The commission commemorated Dr. Rosenbach's legacy as one of America's greatest rare book dealers and his lasting contributions to Philadelphia and beyond with a marker in front of the museum, located at 2008-2010 Delancey Place in the city's historic Rittenhouse Square neighborhood.