How many editions of the RKMS where published by C=?
There are 3 versions of the Rom Kernal Reference Manuals.
Where some editions 4 volumes while others 3?
There are Libraries, Devices, Includes and Autodocs, Hardware and UI Style Guide in the 3rd edition. I do believe there was an AmigaDOS manual earlier but I don't know if it was officially part of the RKRMs.
The white cover editions are 1986? The blue with a pixelated Amiga logo are 1989?
My 3rd edition are Copyright 1992 and dark grey/black with colorful squiggly lines. They cover up to AmigaOS 2.04 (v37).