After some further searching I found that scp auctions sold this Victorian album in July 2009. The one they sold was intact with all 6 images.
The resolution is good so you can get a close look at them.
http://www.scpauctions.com/scpauctio...m?Lot_ID=16753
Phil, I also noticed some resemblances to Giants players.
The one in the catcher's uniform does look a lot like O'Rourke, and the manager sitting down could certainly be Mutrie.
Doing a google search on the album's manufacturer - Liebenroth, Von Auw - turns up an address of Franklin St in New York.
It seems likely that the team represented is the 1886 New York Giants due to the nearly identical uniforms, player resemblances, copyright date of 1887, and the album being manufactured in New York.