Aha! Thanks, Dan. After poking around the 'net, I think this is a Quick-Set Elevator Husky IV model. Quick-Set apparently was located in Chicago then later Skokie, Illinois. The logo has changed several times, so I don't know exactly when this model was made, but presumably 1970s. It weighs almost 8 lbs. Would large-format shooters use something like this? (If one is already carting around a large format camera, then maybe this tripod's weight is not such an issue.)