DescriptionTrade card: Tietjen & Land Dry Dock Co. Balance Dry Docks, Capacity 2000 Tons, With Patent Adjustable Keel Blocks, Ship Wrights and Caulkers, Foot of 14th Street, Hoboken, N.J. No date, circa 1895-1900. 2-11/16" x 4-5/8" wide. "Telephone call, 162 Hoboken." Back has drawings of the patent keel blocks from patent of March 6th, 1884 [patent number not given] by F.C. Lang and J.F. Tietjen plus some text promoting their features.