The Pettijohn Company was a small producer of lithograph stereoview sets during the post 1900 era. There is little or no information on them, outside of the scant bits of information that are found on the reverse side of their views. They did issue World Scenery in a series of sets. As stated on their verso, the four sets (comprising Series 1) were available for order. Although they advertised that more sets would follow the first group, it is not known if this company ever released them. Their only known Yellowstone view is shown below.

The Old Trestle, Golden Gate Canyon.