Anyone have an HP 12661A DVS card manual, 12661-90004?

I don't see a manual for the HP 12661A DVS (Digital Voltage Source) interface card on bitsavers, or hpmuseum.net, or anywhere else. The only reference I have found is in a list of not scanned manuals here: http://rikers.org/hp2100/jeff/iocards/iocards2.txt ---------- 12661 DIG VOLT SOURCE ---------- MANUAL FOR DIGITAL VOLTAGE SOURCE PROGRAMMER INTERFACE KIT HP 12661A MANUAL NO. 12661-90004 APRIL 1971 [Cards #12661-6001 and 12661-6002, connector 02116-6178] This is the interface card that would be used in an HP 1000 to control an HP 6130A Digital Voltage Source. See Hewlett-Packard Journal, June 1968. There is the 14902A BCS driver as listed in 5950-9226_HP_Software_Catalog_Aug1973.pdf Source code for that driver is available as 14902-80001_Rev-A.src in the bitsavers HP_1000_software_collection Master Files, Type 4. Mainly just curious because I have a couple of HP 12661A interface cards without manuals that I have never tried to use and I was reminded about them when an HP 6130A made a brief appearance in Marc's latest Weird Stuff video.