Inherited Disney memorabilia

[Ottojara]

My dad passed away a few years ago and I inherited a large box of things he had saved over the years. One of the things is an invite to the grand opening celebration cerimonies for Epcot, he also has his passes and programs from the weekend celebrations. I have to go through the box again to see what all is in there.

Is that invitation and other Epcot stuff collectible and if it is, what kind of value does it have? Should I not have it in my garage in South Florida?
Any input is welcome. Thanks.

 

[Ottojara]

I started going through the box and have found a lot of cool things.

The tickets used for the Spaceship Earth Gala on Oct. 22, 1982.
The unused tickets with the stubs for the Dedication Ceremony on Oct 24, 1982
A couple of the Spaceship Earth Gala programs (one has a couple signatures in it).
Two 1982 Epcot maps, compliments of Eastman Kodak with a spin wheel inside.
A few Epcot grand opening Dedication Ceremony programs.

He also has a lot of cast member pins from when he worked there as security between 1998-2000.
There is a lot more stuff in the box including some Disney Cast Member magazines with awesome art work on the front.