Thank you for the compliment. The company's annual reports had many illustrations and pictures, especially in the 1940s and after. There you will also find its changing logo. Many research libraries hold pamphlets and material relating to the company. A WorldCat search will turn up much. Also check Ebay. There is a big trade in company material, and sellers often post detailed pictures of their items. If you find any additional sources, I hope you can share them with the forum.