Here's what Fletch had to say:
"The photos are a great great collection. These are most likely contact prints from the original glass plate negatives (same size as the glass plate) The engines are late 1870s - 1880s and many are prints used in their catalogues. They used to literally glue in the prints for the photo pages in the catalogues of this period, but also printed a LOT of these contacts. I have many of the same prints myself. He should keep them and look after them. They are not specifically rare, but there are some engines there which are not seen often; others you see every day in those contacts. The Uncle Dick photo is one you don't see often. If he wants to identify each engine, this is possible, I know many of them, but others would need to look up. Value - each print is worth between $10 and $60 generally- that's what they tend to sell for. There are two Auzzie Baldwins [David is from Down Under. -smd] in there too a 2-8-0 and 4-4-0, both from 1877. These are pretty rare. I have the exact same ones I got for $10 each about a decade ago. Quality today of these prints vary a bit...his collection are all very good. The cutting off of tenders, pilots etc, is normal. Baldwin did this often in their photos."
Hope this helps!
