found: Foss, R. W. Archaeological investigations of the Edenton Snuff and Tobacco Manufacture, 1979 (a.e.) t.p. (Soil Systems, Inc., Marietta, Ga.)
found: Archaeological survey Rich Lake, Moss ... 1979: cover (SSI)
found: Phone call to SSI Earth Systems Division, 6/1/83 (SSI stands for Soil Systems, Inc.)
found: Ecological characterization atlas of coastal Alabama, 1984: t.p. (Soils Systems, Inc., Marietta, Ga.)
found: Phone call to Professional Service Industries, Inc., 2/21/86 (Soils Systems, Inc. was an incorrect variant of Soil Systems, Inc.; in ca. late 1984, Soil Systems, Inc. became Professional Service Industries, Inc.)
found: Phone call to Professional Service Industries, 10-24-86 (Soil Systems, Inc. was purchased by Professional Service Industries and operates as a division of Professional Service Industries under its own name)