The engines could all still be usable, provided the right airframe. They are all control line or free flight engines if you didn't know that already, as evidenced by their lack of throttles. Specifics and values can probably be found here. http://www.modelenginecollectors.org/

The electronics are curiosities, maybe valuable to a collector. The cheapest stuff available now is so much better that the only reason to try and use any of it would be the simple enjoyment of trying.

The props might be good or they might be deteriorated to the point of being dangerous. I wouldn't worry much about the wood ones but the nylon ones do get brittle with time. It's your decision if you want to test them all at 15k rpm to save $2 on a new one.

You've got a neat find there though and thanks for the pics. I love looking at old stuff like that, even if it's not usable anymore.