Canyon (or Grand Canyon) was a mail order line of guitars that used multiple manufactures to make their line up. Yamaki made their highest model, the W-70. The catalog below describes the W-70 as a replica of a Martin D-45, with construction listed as a Spruce top, Jacaranda back, Mexican abolone shellfish position markers, and Schaller type tuners.

Yamaki made other models for mail order companies. Another example would be the Tomson GW-650.