Printing on bottom states, "(1) Non-Classified (2) EST-629 (3) Charleston Naval Shipyard, Charleston, South Carolina (4) 25 May 1966 (5) Nuclear Service Building (6) Not Applicable (7) Exterior of Bldg & Compound (8) Looking East (9) NBy-608020 (10) NBy-EST."
Under tab, "Shop Extensions" Printing on bottom states, "(1) Non-Classified (2) EST-1502 (3) Charleston Naval Shipyard, Charleston, South Carolina (4) 10 September 1961 (5) Multi-Pupose Building and Extension to Machine Shop (6) Not Applicable (7) North Wall (8) Looking South(9) NBy-31328 (10) NBy-EST."