A blazing red elevated railway car thunders across the Charlestown Bridge at dusk in this atmospheric 1905-copyright hand-colored card, the arched iron trusses of the El catching the last orange light while horse-drawn carriages and pedestrians share the roadway below — a fleeting snapshot of Boston caught between the age of the horse and the age of electricity. The Charlestown Bridge, rebuilt in 1899–1900, carried the Boston Elevated Railway's Main Line Elevated (predecessor to today's Orange Line) across the Charles River; this exact structure was demolished in 1953 when the elevated line was rerouted. The card was mailed from Boston on October 17, 1907, by a sender named Dallas to his companion Avisi at Mrs. H.W. Libby's address on Monument Street in Portland, Maine. Dallas's message is delightfully candid: he reports buying two shares of stock at 111, mentions taking Clarence to a burlesque show the night before, and frets that the ship is "so full" the agent wasn't sure he could find room. The 1-cent Franklin stamp is properly affixed and machine-cancelled at Boston, MA, 9:30 AM.