Two technical drawings rendered in sepia tones depict railroad crossing mechanisms from a 1936 patent, with the left figure showing the iconic crossbuck sign and bell apparatus, and the right showing the articulated signal arm in raised position. The composition balances engineering precision with historical weight, rendered in fine linework against an aged paper ground that evokes the original patent document's weathered authenticity. Sewn from a durable canvas-like exterior with a soft lining and made to order, in three sizes up to one that fits a tablet. A catchall for toiletries, art supplies, or small electronics, carrying an independent artist's work instead of a plain zip bag.