Paper tape tray label:

PDP1 working tapes
Box2
Utilities

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DIGITAL-1-1A-S-MB  6/63
Macro Assembly Program

DIGITAL-1-2A-S-MB  SS 4: restore
Macro Symbol Package 6/23
SS 1: Sym. Punch    SS 2: Alpha Print
SS 3: Num. Print

DIGITAL-1-3-S-MB
DDT

DIGITAL-1-4-S-MB
Expensive Typewriter

DIGITAL-1-8A-S-MB  6/63
Extended Operations and Macros

DIGITAL-1-8A-S-MS  6/63
Extended Operations and Macros
Can Append To Macro

DIGITAL-1-19-S-MB 5/20/63
Compatible Reproducer