Gilbert Catalog
Price in 1949: $19.95
Spectacular electric features make this big set a real thriller. Contains Gilbert electric engine with automobile type gear shift for forward, reverse and stop. Electric lights. Electro-magnet so powerful it grabs up steel girders before it touches them. Contains total of 15 pounds of up-to-date parts for building giant Ferris wheel, magnetic crane, bascule bridge, oil drilling rig and over 100 other colossal engine-driven, electrically lighted engineering marvels. Most complete engineering outfit Dad can buy for $19.95. Denver and west $20.95.
FLEX-O-MATIC Powered by the famous Gilbert Electric Motor

Price in 1950: $19.95
Equipped with spectacular electric features to make this one of the most fascinating Erector sets ever created! When you open the sturdy metal cabinet cover and reveal the giant assortment of parts, you’ll see a powerful Gilbert Electric Engine that has a real automobile-type Gear Shift for forward and reverse speeds! You’ll see an Electro-Magnet — so powerful it grabs steel girders before it touches them! You’ll find Electric Lights to illuminate finished models. And you'll discover a huge assortment of parts (total is 15 POUNDS!) to make such fascinating models as an Oil Drilling Rig, Ferris Wheel (shown above, right) Bascule Bridge, Magnet Crane, etc. You can build over 100 engine-driven, illuminated models! Has Flex-O-Matic Coupling Big metal chest measures 20 1/4" x 12 1/4" x 2 3/4". Price, $19.95. Denver and West, $20.95.

Price in 1951: Unlisted
Nearly 16 POUNDS of Girders, Gears, Pinions, Plates, Wheels and other ERECTOR parts make up this massive set, complete with sturdy hinged-cover cabinet. In addition to a 4-speed forward-and-reverse gearing in Electric Engine, you'll find a string of electric lights to illuminate finished models PLUS an electro-magnet so powerful it grabs up steel girders before it touches them! With this set you can make such exciting models as a Magnet Crane, Oil Drilling Rig, Ferris Wheel, Portable Derrick, Operating Elevator, Airplane Beacon, Cantilever Bridge and scores upon scores at others, including over 100 engine-driven, illuminated models alone! Set has Flex-O-Matic magic coupling to transmit motor power in twists and loops. Huge chest, finished in bright red, measures 20 1/2" long x 12 1/4" wide x 2 3/4" high.

Price in 1952: Unlisted
Nearly 16 POUNDS of Girders, Gears, Pinions, Plates, Wheels and other ERECTOR parts make up this massive set, complete with sturdy hinged-cover cabinet. In addition to a 4-speed forward-and-reverse gearing in Electric Engine, you'll find a string of electric lights to illuminate finished models PLUS an electromagnet so powerful it grabs up steel girders before it touches them! With this set you can make such exciting models as a Magnet Crane, Oil Drilling Rig, Ferris Wheel, Portable Derrick, Operating Elevator, Airplane Beacon, Cantilever Bridge and scores upon scores of others, including over 100 engine—driven illuminated models alone! Set has Flex-O-Matic magic coupling to transmit motor power in twists and loops. Huge chest, finished in bright red, measures 20 1/4" long x 12 1/4" wide x 2 3/4" high.

Price in 1954: $24.50
Nearly 16 POUNDS of Girders, Gears, Pinions, Plates, Wheels and other ERECTOR parts make up this massive set, packed in steel chest. In addition to a 4-speed forward-and-reverse gearing in Electric Engine, you’ll find a string of electric lights to illuminate finished models PLUS a powerful electro—magnet, With this set you can make such exciting models as a Magnet Crane, Oil Drilling Rig, Ferris Wheel, Portable Derrick, Operating Elevator, Airplane Beacon. Cantilever Bridge and scores upon scores of others, including over 100 engine-driven, illuminated models alone! Set has Flex-O-Matic magic coupling to transmit motor power in twists and loops. Set is 20 1/4” long x 12 12 1/4” wide x 2 3/4” high.

Price in 1955: $24.50
Builds the Colorful Ferris Wheel, Oil Drilling Rig, Cantilever Bridge, Operating Elevator and hundreds of additional models Nearly 16 POUNDS of Girders, Gears, Pinion, Wheels and other parts make up this massive set. Electric motor has 4-position forward-and-reverse gearing; electro-magnet (for derrick models) picks up steel girders with ease. Includes "Fire-box glow" assembly and Flex-OMatic coupling. Hinged-cover steel chest is 20 1/4" long, 12 1/4" wide, 2 3/4" high.