I found what looks like an old paycheck from my college job, and some stuff for my husband frm his college. Both are in Kansas, and it e-mailed me forms to fill out and send in. I guess the details vary by state, Looks like I need to add proof of SSN, proof of ties to the last known address or the payee (a copy of a tax form, or cancelled envelope, or...)
and values over $500 require a notary signature. Worth a try...