Drum-Taps and Sequel to Drum-Taps are now available on the Whitman Archive, via the "Other Books" section. Heidi Bean derived the transcriptions from the 1867 Leaves, copy-edited the text against the volumes of Drum-Taps, and encoded the text. Joshua Ware migrated the encoding to P5 and developed the XSLT for html display. Ashley Lawson proofread the WWA text. The source documents are copies of Drum-Taps and Drum-Taps with Sequel to Drum-Taps held by the University of Iowa Libraries, Special Collections and University Archives.