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.1162

Henry Roenitz, firm of Jaenicke & Roenitz, dealers and manufacturers of
leather of all grades, consisting of harness and shoe leather, etc.;
established in 1861, 43 Main St. Mr. Roenitz was born in Sheboygan, Wis.,
July 1, 1856. He spent his school days there until 1870. Then went to
Oshkosh and attended the Business College. He returned to Sheboygan and
served his time as tanner and learned the leather trade, and in 1876 he
visited Europe and inspected the tanneries in different portions of that
country with a view of gaining a better knowledge of the business. He
returned in October, 1876; came to Oshkosh, Wis., and began business in
July, 1877, and the firm is now doing a large and increasing business.