![Boston Union Athletic Exhibition Company Grounds . Championship Games, Keystones vs. Boston Unions Buffalo, NY: John B. Sage, [1883]. Chromolithographed poster, 692 x 262 mm (image size). Est $15,000-25,000 . Image courtesy Bonhams.](https://sportscollectorsdigest.com/.image/ar_16:9%2Cc_fill%2Ccs_srgb%2Cfl_progressive%2Cg_faces:center%2Cq_auto:good%2Cw_620/MTY4MDAzMzgxNzI1MjQyNzUy/image-placeholder-title.jpg)
early baseball poster
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