Thank you very much for the elaborated reply!
Since the CD has the version with vocals by Herman, and this version was recorded for MARS acc. to the respective MOSAIC set booklet, on July 7, 1952 and Bill Perkins plays therein acc. to the MOSAIC booklet, it may be that the CD has the recording date wrong. Is the timing the same as is at the Mosaic set, i.e. 2:54?
Personnel of the MARS date: WOODY HERMAN and THE NEW THIRD HERD: Don Fagerquist, John Howell, Roy Caton, Lee Fortier(tp), Carl Fontana, Urbie Green, Jack Green (tb), Woody Herman (cl, as, vcl), Arno Marsh, Dick Hafer, Bill Perkins (ts), Sam Staff (fl, bari), Nat Pierce (p, celeste, arr), Chubby Jackson (b), Sonny Igoe (d), Dolly Houston (vcl), Ralph Burns (arr).
These are the data I get from the three Woody Herman boxes released by MOSAIC, in regard to Early Autumn aka Summer Sequence PT 4:
1. SUMMER SEQUENCE PT 4 - COLUMBIA, December 28, 1947 - master 3:04, take 2 3:07, take 3 3:30 [no vocals, Stan Getz, ts]
2. EARLY AUTUMN - Capitol on December 30, 1948 in Los Angeles, California - 3:14 [no vocals, Stan Getz, ts]
3. EARLY AUTUMN MARS Verve MGV 2030 - NYC, July 7, 1952 - 2:54, [Bill Perkins, ts WOODY HERMAN on vocals]