Featured useful or fun mainframe documents

• John Ehrman's Assembler Language textbook V2.00
• Sam Knutson Fully Wired @ SHARE 101 SHARE in DC
• Large Block Interface Information
• ASSIST Introductory Assembler User's Manual [1974]
• The Joy of SHARE, Sam Golob September 2000
• Joel Sarch SHARE 72 — Lend Me Your EAR: The Art of MVS/ESA Programming (SHARE session foils)