Classic/Antique Car Repair: 38 Packard clutch, clutch pedal, universal problem

Question
I believe the clutch is sticking to the flywheel on my 6 cyl '38 Packard after its stored for more than a month or so.   When this has happened in the past, and the clutch finally broke free, the clutch and transmission worked perfectly, so I don't think it's a tranny issue. Is there an easy way of "freeing" the clutch, and is this a sign of a worn seal leaking onto the face of the flywheel?

Answer
The problem is a combination of humidity, the pressure of the pressure plate, and a thin coat of rust developing on the flywheel. In one of my old Audel manuals they advise blocking the clutch pedal down in the disengaged position when the car is "to be put up for the winter". So the problem is not just your car but a universal problem.
Brad