Not sure if you really require a manual for this lens, but anyway, at least it explains the hidden built-in filter for color and bw photography.
The wide vista
Classic Panorama Photography
Just panoramas, shot with Hasselblad Xpan,Noblex,Fotoman 617.
As wide as it can get !
AGFA Clack & Click, Isoly, Billy Record, KIEV88, Pentacon and Mamiya ZD Images.