Department of the Army Technical Manual TM 9-7018: Medium Tank M4A3 Paperback - 1954, by John A. Ridgway M. B. (chief of staff); Klein (Author), Paperback: 810 pages Publisher: Department of the Army (reproduced by Portrayal Press) (1954) Language: English
This should fill in some holes I have in my Sherman documentation.
After this, I need to get ahold of the TM for the M4 or M4A1, I do not have good manual pictures of the R975, I do have a bad copy of the ov