Dear TIME-Reader:
FARMERS north of Louisville, Ky. were startled late one afternoon last fall by a strange spectacle coming down the B. & 0. railroad tracks. Rolling along at 3 m.p.h. was a Speno rail-grinding train. Six feet out from the last car was mounted a camera on a makeshift brace of 2 by 6 planks and spikes. Behind the camera a 6-ft.-5-in., 250-lb. man trotted along the ties, triggering the camera to catch the brilliant constellations of sparks thrown off by the rail grinders.
The trotting photographer was William Vandivert, taking a series of color pictures for this week's story on the...