Vintage ink blotter advertising piece featuring the Yerkes Observatory on Lake Geneva in Wisconsin. This promotional item was produced by the Mid-West Bottle Cap Co. of Belvidere, Illinois, and serves as a piece of regional memorabilia.

Specifications:
• Condition: VG+
• Subject: Yerkes Observatory, Lake Geneva, Wisconsin
• Advertiser: Mid-West Bottle Cap Co.
• Graphic: Nighttime observatory scene with sailboat and state outline
• Material: Absorbent blotter cardstock
• Origin: Belvidere, Illinois

Item will be packaged securely and shipped fast.

Keywords: vintage advertising, wisconsin memorabilia, astronomy collectibles, ephemera, midwest history, paper goods, retro graphics, lake geneva wi, observatory art, ink blotter

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