in The Jack Kirby Omnibus (DC, 2011 series) #1 (July 2011)
in Big Boy (Arédit-Artima, 1956 series) #23 (August 1958)
from Strange Adventures (DC, 1950 series) #7 (April 1951)
in Big Boy (Arédit-Artima, 1956 series) #23 (August 1958)There is a #1 in the lower right corner of the first panel. Since Boltinoff's DC job numbers were four digits, this probably indicates that this the first Doctor Rocket strip.
from Strange Adventures (DC, 1950 series) #2 (October-November 1950), #29 (February 1953)
in Big Boy (Arédit-Artima, 1956 series) #23 (August 1958)
in Big Boy (Arédit-Artima, 1956 series) #24 (September 1958)
in The Jack Kirby Omnibus (DC, 2011 series) #1 (July 2011)