This is an Art Craft cacheted First Day Cover for the 1971 Historic Preservation series, featuring a se-tenant block of four 8¢ U.S. stamps issued October 29, 1971, in San Francisco, California. The stamps depict Decatur House (Washington, D.C.), the San Francisco cable car, the Charles W. Morgan whaling ship, and San Xavier del Bac Mission in Tucson, Arizona.
The Historic Preservation series highlighted American landmarks and structures worthy of conservation during a period of growing national interest in protecting historic sites amid urban development and modernization in the early 1970s.
The left-side cachet illustrates all four subjects with detailed line drawings and includes the series title and Art Craft imprint, providing a cohesive visual complement to the stamp block.
A desirable addition for collectors of U.S. se-tenant issues, historic preservation topicals, or Art Craft cachets, with clear first-day postmark and well-centered stamps.
