For the Apple IIGS, Macintosh
The Apple 3.5 Drive Owner's Guide, Apple # 030-0126-A, 030-0126-B, 030-2050-A, or 030-2050-B.
All manuals appear to be identical, but the 0126 A and B have a grayscale cover instead of color - not pictured. The manual you receive may any of these.
This 29 page manual covers the setup, usage/chaining and specs for the Apple 3.5 Drive, A9M0106. Covered are the Apple IIGS and Macintosh 512K and Plus.
Most of the covers are a little yellowed with age, storage conditions, or both.
Available with or without 3.5 Drive purchase.