SCIENTIFIC AMERICAN, New York, June 21, 1919  See the photo below for the great color cover showing wheels being made, the print captioned: "An Electrically Operated Machine For Stacking Finished Wheels". There is a related article--with several more black & white photos--on an inside page. You get the complete issue which is in very nice condition. Minor inked library stamp in the blank right margin (see photo), otherwise quite nice. Measures about 10 3/4 by 13 3/4 inches.