1937 Yellowstone tour bus
![](https://edgecast-img.yahoo.net/mysterio/api/729EFD131E4942DBA7ADE044BE3265EF587FFFA4717575F3B9B76DCDBC325B4F/autoblog/resizefill_w1200_h675;quality_80;format_webp;cc_31536000;/https://s.aolcdn.com/commerce/blogcdn/slideshows/images/slides/710/003/5/S7100035/slug/l/screen-shot-2017-09-21-at-10-32-15-am-1.jpg)
- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's
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- Image Credit: RM Sotheby's