A Criss Cross was a phone directory that allowed you to look up a phone number and find the name and address. The Doc Savage Publication Criss Cross allows you to the year and month, Bantam number, and Sanctum number for every pulp issue of Doc Savage Magazine.

DocSavage.Org – CrissCross – Final – PDF

Key: YYMM.Issue#|Bantam Vol.Sanctum Vol (Note” “M” stands for Bantam Omni volume)