The GMC CCKW

I'm interested in finding any manuals which cover the US H10 and H20 portable steel bridges. I'm particularly interested in the H10. These bridges are illustrated in FM 21-105, "The Engineer Soldier's Handbook." But I am looking for the TM's which cover just this equipment.

**UPDATE: I found the manual number and missed it on ebay. I am looking for a TM 5-274, also known as Portable Bridges H10 and H20. If you find one for sale, I'd appreciate the lead.

Man,

i was SO CLOSE! I finally found the bridge manual hat I knew I had around here and its TM5-273, NOT TM5-274... It covers the 25 ton Ponton bridge Model 1940, not the H10 and H20 bridges.

Still a very cool piece!