Hand-colored photographic postcard of the US-Mexico international boundary monument at Tia Juana (Tijuana), Baja California, Mexico. The tall octagonal granite obelisk stands within a circular iron picket fence on a rocky hillside, with a water tower visible on the ridge at right and the broad treeless landscape of the border region stretching to the horizon.

• Caption: Boundary Monument Tia Juana, Mexico.
• Card no.: No. 5250
• Publisher: Newman Post Card Co., Los Angeles, Cal. (Made in Germany)
• Postmark: Loma Linda, Cal., Nov. 1, 1909
• Status: Posted
• Notable stamp: Scott 331 — U.S. 1¢ Franklin, green, Series of 1908