This original issue of Scientific American dates to January 28, 1911, Volume CIV, Number 4, and carries a striking cover illustration depicting the Vulcan, a self-propelling floating dock designed for salvaging submarines, raising the sunken German submarine U-3 in just three hours. The caption notes that 27 lives were saved. Scientific American billed itself at this time as "The Weekly Journal of Practical Information" and cost 10 cents a copy, reflecting its broad popular and technical readership. The back page carries period advertisements for Sanatogen tonic, a Scribner's February issue preview, aviation articles from Munn and Company, and a Standard Practical Plumbing reference book, all intact and legible. Pages show light toning consistent with age but remain structurally sound with no missing sections, tears, or detached leaves. A vivid primary source document from a pivotal era in submarine warfare technology.