The W A Martin Invented Lock
Dec. 25, 2024
W.A. Martin – Los Angeles Sentinel Granville Woods, American Inventor Photograph by Science Source - Pixels MTA Maryland on Twitter: "In celebration of African American History Month, MTA commemorates Garrett Morgan, inventor of the traffic signal... https://t.co/sBETgtUN3q https://t.co/8Wzj5BiKiH" / Twitter The W A Martin Invented Lock