Nice group of three real photo stereoview cards from Lowell, MA showing Merrimac River related things- the canal and train depot, Merrimac Cotton Mill, and the falls - Pawtucket? Look like late 1860s- to mid 1870s mounts. Really a ton of great detail to see in this group.
Note- if you see grey dots in my images they are not there- something my idiot camera was doing that I fixed.
Happy to ship anywhere and will of course combine shipping for multiple items.