According to the information written on back of this photograph, this is Mr. John McGrew.  The photo was taken by Davis Mahan, successor to McBride and Mahan, 31 Fifth Street, Bank Black, Pittsburgh, Pennsylvania.  (At that time it was Pittsburg with the ‘h’!)

I found this photo so interesting!  Indeed a very old man as evidenced by his white hair and beard, and the many wrinkles in his face.  Because of his suit I would date this photo to the late 1860’s or early 1870’s.  How I would love to be able to sit down with this gentleman and have a conversation!  What interesting times he must have lived through – evidently the Civil War, the Mexican War, War of 1812 – did he serve during any of them?  Think of the presidents he saw come and go – was he for Lincoln in the 1860 election?  Did he remember when Thomas Jefferson died?  My old photos always arouse so many questions when I look at them!