I have close to 200 Gas era Holt, Best, and Caterpiller ads. I haven't had them out for sometime, and I lost count after number 1, but there is close to or over 200 of them. The earliest is around 1918ish and the latest is 1940ish for D2. Many are in frames, but I also have a pile that is loose, and still some in original magazines. I am wanting to sell in one whole lot. I will be bringing them down to Pickneyville, Il for the crawler feature. Let me know of interest.