Some of the material in this book originally appeared (in a more abbrevlated form) in the Travellers' Digest, issue numbers 1 through 3.
From The Travellers' Digest (Issue 6):
CREDIT WHERE IT"S DUE
Oops! Marc Miller, who hates to admit that the Workshop ever makes mistakes, confided in me that he made one recently. When he prepared the credits for Book 8, Robots, he neglected to include Gary Thomas as one of the designers. Design credit for Robots goes to Joe Fugate and Gary Thomas. While the error will be corrected in the next reprint, Marc felt it important to make a point of it now. Those of you who have Robots should pencil in Gary Thomas as co-designer on the credits page.
Loren K. Wiseman, Editor