For those interested in Countermarch looms or looms in general, there are three texts which can be found on used book sites that speak of the CM loom in detail: Fanin, Tovey and Zielinski.
"Handloom Weaving Technology", by Allen Fannin ; ISBN 0-442-22370-6 & rev. ISBN 1-55821-612-X
"The Technique of Weaving" by John Tovey, -1965, ISBN 0-684-14322-4.
"Master Weaver" series, by Stanley A. Zielinski ; pub. by Leclerc Looms, see volume 2, "All About Looms".
(Zielinski shows sketches of eight different CM loom systems.)