Gilbert Catalog
Price in 1949: $5.00
You can see how electricity works with this exciting equipment. Parts build electric motor, electro-magnets, bell, buzzer, battery, etc. Set also has compass, telegraph key, bar magnets, etc. $5.00. Denver and west, $5.25.

Price in 1950: $5.00
Explore the mysteries of electricity! Learn the secrets of static electricity, magnetism, electric motors. Set is chock full of fascinating equipment to make an electro-magnetic Gun, Magic Cork, Solenoid, Galvanoscope, an Electric Light Plant, Rheostats, Wet Cells, an Electric Spider, etc. Build motors, electro-magnets, buzzers, batteries and bells. Real Morse Code messages can be sent with Telegraph Key which set can make. Outfit includes Zinc Rod, Carbon Rod, Ammonium Chloride, Solenoids, Motor parts, Socket and light, Bell parts and many other pieces of equipment. Colorful box measures 20 1/4" x 13" x 1 1/8". Illustrated Instruction Booklet packed with Set. Price, $5.00. Denver and West, $5.25.

Price in 1955: $9.95
Not only offers hours of fun and enjoyment but also provides complete education in whys and wherefores of electricity. Includes 1 1/2 volt electric kit motor with "see-through" housing, brass-plated pulleys, brass-plated gears, mounting brackets, axle, 2 four inch bar magnets, 2 solenoid coils, 5 1/2" battery holder, 2 dry cells – 1 1/2" volt bulb, telegraph key unit, electrical bell, mounting base, glass, carbon, zinc and rubber rods, powdered iron and ammonium chloride, 3 parts bottles and illustrated manual. Set is 20 1/4" long, 13 1/5" wide, 1 1/4" deep.