In 1968, he covered the Russian invasion of Czechoslovakia from Prague for UPI and was subsequently assigned the role of Manager for Eastern Europe.
[1] In 1974, Sudhalter and Philip R. Evans (né Philip Roland Evans; 1935–1999) co-wrote Bix: Man and Legend, the standard biography of jazz cornetist Bix Beiderbecke,[2] and the first jazz biography ever to be nominated for a National Book Award.
"[4] Sudhalter's other books are Lost Chords: White Musicians and Their Contribution to Jazz, 1915-1945 (1999) and Stardust Melody (2002), the first full-length biography of Hoagy Carmichael.
[5] Sudhalter received an ASCAP Deems Taylor Special Citation for Excellence for Lost Chords, and a Grammy Award in 1983 for his liner notes for Bunny Berigan: Giants of Jazz.
A stroke in 2003 forced him to retire from playing, after which he developed multiple system atrophy, a disease that left him unable to speak and subsequently led to his death from pneumonia, aged 69.