The Complete Dog Book Dr. William A. Bruette, Stewart Kidd Company, GB, 1921 (Digitized by Internet Archive)

Under "Shepherd Dogs" you will find chapters on the Old English Sheep Dog, the Rough-coated & Smooth-coated Collie, the German Shepherd Dog and the Shetland Collie. Unfortunately, the Sheltie is the only one of the 5 breeds described without a photo. 

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