Indeed it was, and not just from the planes coming in, but also truckload shipments to numerous various other distribution centers after the planes had been unloaded. The presence of the boneyard at Davis-Monthan was real handy for keeping some of those former USAF *Forest Service contract fire bombers* flying, and some of those other airports you mentioned- Wickenberg was one- came in handy too.
Evergreen got all kinds of different aircraft into Marana, not just cargo birds, either. And Lufthansa staff from Ajo used to fly in there. I think there was even a Janet Terminal 737 flight from Las Vegas that made a run a couple of times a week back around August '83. And there was that weird train sabotage derailment thereabouts in October 1995 in which a passenger was killed, as well as the crash of that Marine Osprey at Avra Valley in early April of 2000.