A complete ticket book with the transportation ticket(s) may be exchanged for a non-expiring modern non-date-priced non-upgradable ticket with the same number of days (1, 2, or 3).
You will probably want to save it as a souvenir rather than turn it in for park admission.
For a partially used or otherwise incomplete ticket book, the remainng ride coupons have a value of, I think, up to one dollar (for an E ticket) each.
It is safe to post a picture of a non-electronic ticket (no bar code, no magnetic stripe, etc.). The actual ticket has to be presented in person for exchange. I think the first electronic tickets were ca 1995-2004 park hopper plus tickets, with mag stripes.