Elementary electricity up-to-date;
A 1909 instructional manual on electricity by Sidney Aylmer Small, issued by F. J. Drake & Co. in Chicago for students, tradesmen and home experimenters. Line diagrams show battery circuits with labelled terminals, ring-armature dynamos with arrows tracing current, breadboard-style wiring on binding posts, and halftone photographs of bells and switch hardware — usable as technical schematic motifs and apparatus silhouettes.
