Wikipedia:Sandbox
The U.S. Route shields was in use in 1926 – 1947 before modifying the revision in 1948.
Primary U.S. Route shields
District of Columbia 1926
New York 1926
Connecticut 1926
Wisconsin 1926
New York 1926
Maine 1926
New York 1926
Connecticut 1926
Colorado 1926
Nebraska 1926
Illinois 1926
Indiana 1926
Ohio 1926
New York 1926
Rhode Island 1926
Connecticut 1926
Wisconsin 1926
Idaho 1926
Wisconsin 1926
Georgia 1926
Tennessee 1926
New York 1926
File:US 62 Illinois 1926.svg
File:US 63 Louisiana 1926.svgFile:US 63 Tennessee 1926.svg
File:US 71 Texas 1926.svg
File:US 73 Iowa 1926.svg
File:US 91 Nevada1926.svg