History of northern Wisconsin: containing an account of its settlement, growth, development, and resources, an extensive sketch of its counties, cities, towns and villages, their improvements, industries, manufactories, biographical sketches, portraits of prominent men and early settlers, views of county seats, etc. Chicago: Western Historical Co., 1881. p.1165

A. Von Kaas, drugs, successor to R. Guenther, carry stock of about $4,000
to $5,00, strictly drugs, no paints and oils; sales about $12,000 yearly.
Was born in Sheboygan Co., Wis., Jan. 18, 1854, his parents having located
there two years previously; educated in Sheboygan in Graded and High
School; came to Oshkosh in 1871, and went into Guenther's store. Mr. Von
Kaas is a member of "Centennial" Lodge, No. 205, A., F. & A. M., "Casino"
Musical Society, Turners, and Oshkosh Yacht Club.