This Art Craft First Day Cover features the 5¢ Doctors Mayo commemorative stamp, postmarked on the first day of issue, September 11, 1964, in Rochester, Minnesota. The cachet displays portraits of Dr. Charles H. Mayo (1865-1939) and Dr. William J. Mayo (1861-1939), along with the Mayo Clinic centennial emblem.
The Mayo brothers transformed American medicine by establishing the Mayo Clinic in Rochester, pioneering the concept of integrated, multi-specialty group practice that combined patient care, research, and education under one roof. Their model became the standard for modern medical centers worldwide.
A notable detail is the matching artwork between the cachet and the stamp itself, both depicting the sculpted busts of the two physicians; the cachet also includes their famous quote, “They revered the truth and sought to know it.”
This clean, well-centered cover makes an excellent addition for collectors of medical history, famous Americans, or Art Craft cachets, offering strong display value and solid philatelic provenance.
