White technical line drawings of a fire hydrant appear across a dark charcoal background, rendered in the style of a vintage patent schematic with detailed mechanical views and cross-sections. The composition balances multiple perspectives of the industrial object with handwritten annotations and official patent markings, creating a cool, technical mood that celebrates industrial artwork history. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.