Might be an idea, I have thought about that. Here's a picture of the battery charger and manual that I bought.
View attachment 1716148796
View attachment 1716148797
Got those magnetic trays and hooks as well, looked inside the transmission book, published in 1973, and it has two sections at least, one of which has all of the fluid path schematics for every transmission listed, the other is text with troubleshooting and disassembly/reassembly directions. Paid $60.00 for all of it.