I am wondering if they would convert game show tapes. Their FAQ is wishy-washy.
"When you submit your items to us, you are indicating that you are not acting in violation of any copyright laws by having the work duplicated and/or that you have obtained permission from the copyright holder to have it digitized."
This is their "out". They're saying they will absolutely convert whatever tapes you send them, and in the preposterously unlikely event that anybody a) finds out and b) has an issue with it, well they told YOU to go get permission, so this is YOUR problem, isn't it?
They can't say on their website, "We'll convert whatever you've got, don't worry about copyright." This is their way of saying they'll do it without actually saying they'll do it.