Walt Whitman, glass negative, between 1860 and 1865
Walt Whitman was born 190 years ago, on May 31st, 1819. The portrait above courtesy of Library of Congress, Brady-Handy Photograph Collection.
The Opening History aggregation includes two digital collections about the famous poet: Walt Whitman Archive and Integrated Finding Aid to Walt Whitman Manuscripts.
There are also some interesting items about Walt Whitman in a number of other digital collections in Opening History. For example, listen to 
audio recording of Allen Ginsberg teaching a class on Walt Whitman and negative capability at Naropa Institute in 1987 (1 hr. 20 min.), courtesy of Naropa Poetics Audio Archives collection, part of a larger Heritage West digital collection.
Sowing Culture 