Boston's magnificent South Station — then the busiest rail terminal in the United States — dominates this sweeping colour-lithograph view from around 1910, its Beaux-Arts granite façade flanked by elevated railway tracks alive with period streetcars, horse wagons, and early automobiles that place us firmly in the transitional moment between horse age and motor age. Card no. 6435, printed in Germany with the lush chromolithographic palette typical of the pre-linen era, was mailed from Providence, Rhode Island on February 6, 1910 to a woman named Mrs. C.C. Eager at 1416 H St., Plainfield, New Jersey — and the message it carries is unexpectedly conspiratorial: the anonymous sender asks the recipient to tell "Rob" to visit "Hall Sig Works at 630 this night and ask for D.R. Sherwood — don't tell anyone in the office what you want, only that you want to see him." Whatever the intrigue, the one-cent Benjamin Franklin green stamp and crisp Providence machine cancel make this a pleasing philatelic and topographical package.