1923 – The Electric Dog – Hugo Gernsback * (American)

(Source: Practical Electrics Sep. 1923 ed Hugo Gernsback) This electric dog follows a magnetic walking cane in any direction like an obedient servant. Simply hold the cane in front of the dog's nose, whereupon the dog starts running and will follow the cane straight ahead or to the right or left as desired. See pdf …

1952 – Ebenezer the Mechanical Man – Jack Brownson (American)

(Source: Mechanix Illustrated June 1952) Mechanical Ebenezer Children in Des Moines, Iowa are enchanted by a six-foot mechanical man who walks, talks, and smokes cigarettes. Jack Brownson, who spent four years making him, guides Ebenezer by a cable, projects his voice through loadspeaker. Construction is almost entirely auto parts.

1954 – “Robo” the Mechanical Elephant owned by C.C. Ezell (American)

Gas-powered Elephant to give Children Rides San Antonio Light 4 Nov 1954 Robo, the monstrous robot elephant owned by the Ezell drive-in theaters is scheduled for a 1-week stay at the Fredericksburg rd. drive-in beginning Friday. The realistic elephant will also be exhibited at Handy-Andy shopping centers during the day and will give the kiddies …

1979 – “Jumbo” the Mechanical Elephant – Restoration by Larry Gavette

In 1979 an American named Larry Gavette, who lives in Waterford, M.I., U.S.A., took his daughter to Bald Mountain Riding Stables for a pony ride. There he found a some-what dilapidated life-sized mechanical elephant and he bought it,  trailer and all, for 125 dollars. It was in poor condition and at first he wondered whether …

1936 – “Robie” the Radio-Controlled Robot – Arthur Wilson (American)

Caption: Here is "Robie," the amazing radio controlled mechanical man that can do practically everything but think. He is the brain child of Arthur Wilson of Chicago, Illinois. Modern Mechanix December 1936 Mechanical Wonder Man Is Operated By Radio Control "Robie," a mechanical robot walks, talks, smokes and winks his eyes when electrical impulses are …