A pair of great saw milling images taken by the same photographer on the same day - the first image shows and overview of the saw milling operation (appears to be steam driven) with workers and possibly their family members - the second image is a closeup in front of the equipment with the workers posed on front of it.  When you compare the images you cane pick out the details in the closeup in the broader image, even some of the workers themselves are match-able.  These appear to be Albumen prints and are early, again I would say the decade of the American Civil War (1861-1865) or just slightly later.  In the middle background among the men there is a barrel mounted on a movable cart with piping - not sure if this is some sort of early fire fighting equipment?  In the closeup image, some of the men wear waterproof suits (?), one of them holds up a pick ax and another holds a sort of branch of flowers - maybe a dedication to their new venture?  

One of the images is stamped several times on the verso by "O. M. Stephens," which I first believed may be the photographer, but now I am fairly sure this is the owner of the Saw Mill.  A man named "O. Stephens" owned and operated a saw mill in Clarksville, Red River County, Texas in the late 1860s and early 1870s.  He is listed in the Texas State manufacturing census done in June 1870 where he is listed as operating his saw mill.  According to the Texas State Historical Association:  "From the late 1830s until the Civil War, Clarksville was the most important trading center in Northwest Texas. Steamboats brought goods from New Orleans by way of the Red River and delivered them to Rowland's Landing fifteen miles to the north. They were then hauled overland by wagon. During the 1850s new steam sawmills and cotton gins added to the town's importance."

Size of each of the images is approx 7 x 9 inches.  Condition is pretty good, slightly dirty, backing boards are badly broken off but images are intact and very clear.  Buyer to pay shipping, good luck!