This the car that just came out of 34yrs of dry storage. Brakes and everything seem to be working properly. But the clutch pedal just will not depress.

Now I will say I have NOT tried to force it hard. I know they are heavier than a modern clutch from what I hear, but I've pressed on it semi-hard and no movement.

Is this something that would likely pop-free with a little harder pressure or are there other concerns or damage that could occur by doing that?

I guess being slammed together for 34yrs could have just caused it to bind