What kind of "prints" are these and how to "clean"

I bought these off ebay a couple weeks ago..

They are from a book, "The Soldier in Our Civil War"
The listing said they were from 1884 and Ive seen they were republished in 1890 as well.

They have some staining in the lower center fold and one has completely come apart at the center fold.
I plan on framing these.
Whats the beset way to clean or lighten the stain repair the separation, and try to decrease the crease?

What kind of printings would these be if out of a book?









Separated piece laying back together

 

Nice prints
Here is the book
https://archive.org/details/soldierinourcivi01lesl

 

Thanks!!

I saw some images out of it the other day while searching and didnt save them..
I asked the ebay seller if they had anymore and they said they did
I went back to try and find them and couldnt. This will help a lot!

So many images!
Im a sucker for older horse art, especially military related

 

Oh my goodness, I might as well just buy the darned set..
Theres SO MANY I LIKE! I will be poor purchasing them independently like this

I guess one vol is the Union and the other Confederate?

One of my favs so far!

 

Hmm, here's a CD of the book if you just want the images
https://www.ebay.ca/itm/Frank-Lesli...913764?hash=item2ec98c58a4:g:WZUAAOSw7n9XE~4C

 

or here's the book
https://www.ebay.ca/itm/The-Soldier...549682?hash=item28447a2df2:g:~HcAAOSwCmNZ1qYK

 

Usually called wood engravings (a type of relief print). I don't know how accurate that is. These types of pictures might have been photographed directly from drawings or scratchboard.

 

Didnt you post a whole thread on types of prints?
I wanted to search for it but didn't know where to begin

 

It's pinned in the art category, but it deals with studio intaglio prints... not the mass market processes and not relief prints.