I am a volunteer at the Computer History Museum. I led the museum's
full restoration of an IBM 1620 several years ago
I am currently leading a new effort, the /IBM 1620 Jr./, to create an
operational, hands-on exhibit using a real IBM 1620 front panel driven
by a Raspberry Pi. As part of that effort, I'm writing a new,
cycle-level simulator. The existing simulators, like SimH, are
instruction-level and cannot drive the front panel.
The simulator work could greatly benefit from the IBM 1620 & 1622
manuals and system diagrams that you have.
I'd be happy to pay for any shipping costs.
When this project is complete, the manuals will be donated to the museum
to add to their collection of IBM 1620 documents.