A long waterfront industrial or institutional building complex with red roofs and many windows sits on a point of land, with a distant town shoreline beyond and open water in the foreground. A small steamboat with a smokestack moves across the lower right of the scene.
No printed text or white border visible on the front; scan appears rotated so the shoreline runs across the frame. Flat, poster-like color typical of lithographic printing.
No postmark, no stamp, no handwritten message. Undivided back ("THIS SPACE FOR ADDRESS ONLY"), glossy chrome-era card with National Color Press imprint. Dealer pencil mark "#59 / 1-" in lower right corner.
Cite this card
Alcatraz Island, San Francisco Bay, California, postcard, n.d.. PostalPast Collection. https://postalpast.com/postcard/alcatraz-island-san-francisco-bay-california-2. Accessed October 5, 2026.