A black and white photo of the labs at Paulsboro. On the back of the photo, there’s an inscription that reads, "3. Street View of Paulsboro Laboratory Buildings, The Research and Development Division occupies thirteen buildings located at Paulsboro, N.J., with a total floor space of 51, 000 square feet. Research in the field of organic chemistry and precision measurements such as those being carried on in the electrical field are made in laboratory buildings such as these. The Administrative Department of the Laboratory is also housed in this group of buildings. The Technical Service Division occupies 35, 500 square feet of floor space in five buildings. It is not possible to convey in photographs an adequate idea of the size of the plants of the laboratories, or to give more than a vague impression of the nature and complexity of the equipment. Nevertheless, the apparatus available for development work and testing varies from the finest precision instruments small enough to hold in the hand, to dynamometer engine, cold room, and still assemblies, costing up to $50, 000 each and weighing many tons. (Research and Development Division)" There’s also a stamp that reads, "Mobil Photo Library, Socony Mobil Oil Co., Inc., Socony Mobil Building, 150 East 42nd St., New York 17, N.Y." Another stamp reads, "Photo by William M. Rittase, 247 S. 15th St., Phila Pa, Phone, Pon 1418" In pencil it reads, "photo taken in 1936 or 1937." In pencil it reads, "4 1/4 pos."