Yes, that is an original Mack Satellite, the other Mack C facing the camera may be an Engine or Tower Ladder 1 (not clear enough to tell).
As for supply, there is large diameter hose as the Satellites carried, may have been supplied by pumper(s) feeding a manifold or Super Pumper. In those days a Satellite responded on the second alarm. Super Pumper, Tender, and usually another Satellite on the third.