First Day Covers 1962 Thru 1973

I have had a very nice Postal Commemorative Society US First Day Covers book for about 10 years. I got it at an estate auction in a big box of old books. I have stamp books from my grandfather who worked for the US post office but I really did not get fully into collecting. I want to sell these but have know idea of their value.
If anyone can provide assistance that would be great and I will give you first dibs.
Bill

'Modern' FDCs tend to have very little value and are sold in bulk. You might find it difficult to flog them.

Just a thought: PCS had the cache produced by Artcraft in those years I think. Although the value of FDCs is depressed in the philatelic markets today, Artcraft sets might hold a small premium. Look around for a local stamp show, contact the show backer and see if you can get a list of vendors that specialize in FDCs. Contact them & ascertain if they use a 'buck a cover' aspect for their more common issues & see if you can strike a deal. Don't look to get rich, just make a sound deal. If you only have 1 album, list intact on ebay with pictures or run an add in the local weekly, or contact a local stamp club. A little effort might prove beneficial to some short cash gain

"stamp books" ?? I'm curious, are they albums or reference books.....?

Thank you