Frontispiece. The illustration is a detail from the story from Superman's Pal, Jimmy Olsen (DC, 1954 series) #62.
Title page. The illustration is a detail from the story from Superboy (DC, 1949 series) #104.
Publication data on right 2/3 of right-hand page, illustration on left 1/3 of right-hand page and right 1/3 of left-hand page, actual listing of contents on 2/3 of left-hand page. The illustration is a detail from the story from Action Comics (DC, 1938 series) #336. The second story is mistakenly listed as being from Adventure Comics #289 in the publication data, but correctly listed as from Superboy #89 in the Contents.
Letterer credit from GCD index of original publication.
Letterer credit from GCD index of original publication.
Usually written as Dr. Xadu and Professor Vakox, these names are spelled Xa-Du and Va-Kox here.