A crowd of thousands surges outside one of the world's busiest transit hubs on this vivid 1915 dual-image postcard — the ornate Mansard-roofed building above street level contrasts dramatically with the raw underground platform below, where early IRT subway cars sit beneath bare concrete columns in a scene captured just eleven years after New York's subway opened. The Brooklyn Bridge Station (today's Brooklyn Bridge–City Hall stop) handled an estimated 2,000,000 passengers daily according to the printed text on the reverse, making it the self-proclaimed "busiest station in the world." The card passed through Times Square Station's canceling machine on October 12, 1915, carrying a terse five-word message from a sender named Nim to a recipient named Ellen in Worcester, Massachusetts — "Don't write until you hear from me" — a cryptic note that hints at a story now lost to time. The lower panel's black-and-white photographic reproduction offers a rare tunnel-level view of the IRT's wooden elevated-style cars, platform crowds in period dress, and the third-rail infrastructure of the early electric subway era.