Scope and ContentPaper sample print: Keuffel & Esser Co., No. 224, Columbia trademark, Blue Process Paper, medium thick, (Hoboken, 1917.) 4" wide x 7-7/8" high, fold marks. With: original K&E mailing envelope postmarked Hoboken May 4, 1917; return order postcard. The blueprint reproduces a line drawing at the center of a wye level on tripod. A price list or other expected communication from the company is not present.