ScientificAmerican1899-12-09.jpg ThumbnailsThumbnailsThumbnailsThumbnailsThumbnails
The correspondence method of instruction. Illustrating department. Mailing department. An I.C.S. student experimenting. Power room. Examiners correcting papers. Textbook department.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner