1920s Science toys sources
- Gilbert Erectors, The Missoulian, Dec. 22, 1922
- Wireless Telegraphy, The Missoulian, Dec. 22, 1922
- Gilbert Toy Motors, The Missoulian, Dec. 22, 1922
- Gilbert Chemistry, The Missoulian, Dec. 22, 1922
- Gilbert Electrical Sets, The Missoulian, Dec. 22, 1922
- Gilbert Air-Kraft, The Missoulian, Dec. 22, 1922