Hi fylbrig413...Welcome to the forum..enjoy.
You have a great Newfoundland block.
1 - Unitrade (back of book) Scott 33P
2 - N.S.S.C. number 34B
You need a Unitrade Catalouge and if you are interested in Newfoundland stamps a N.S.S.C. (Newfoundland Specialized Stamp Catalouge).
If you need additional information on what you have, you may contact the 2 links below.
John Walsh N.S.S.C. Catalouge.firstname.lastname@example.org
Malcolm Back at BNAPSmback1217@rogers.com