The U.S. Route shields was in use in 1926 – 1947 before modifying the revision in 1948.
File:US 62 Illinois 1926.svg
File:US 63 Louisiana 1926.svg
File:US 63 Tennessee 1926.svg
File:US 71 Texas 1926.svg
File:US 73 Iowa 1926.svg
File:US 301 Florida 1926.svg
File:US 401 South Carolina 1926.svg
File:US 202 Delaware 1926.svg
File:US 202 New York 1926.svg
File:US 202 Connecticut 1926.svg
File:US 209 New York 1926.svg
File:US 309 New York 1926.svg
File:US 111 New York 1926.svg
File:US 411 Tennessee 1926.svg
File:US 511 Tennessee 1926.svg
File:US 116 Wyoming 1926.svg
File:US 216 Wyoming 1926.svg
File:US 219 New York 1926.svg
File:US 319 Florida 1926.svg
File:US 220 New York 1926.svg
File:US 420 Wyoming 1926.svg
File:US 321 Tennessee 1926.svg
File:US 421 Tennessee 1926.svg
File:US 122 New York 1926.svg
File:US 322 Ohio 1926.svg
File:US 422 Ohio 1926.svg
File:US 522 West Virginia 1926.svg
File:US 224 Indiana 1926.svg
File:US 224 Ohio 1926.svg
File:US 129 Florida 1926.svg File:US 129 Tennessee 1926.svg File:US 129 Kentucky 1926.svg
File:US 131 Indiana 1926.svg
File:US 231 Florida 1926.svg
File:US 331 Florida 1926.svg
File:US 241 Tennessee 1926.svg
File:US 241 Kentucky 1926.svg
File:US 441 Florida 1926.svg
File:US 541 Florida 1926.svg
File:US 143 Tennessee 1926.svg File:US 143 Kentucky 1926.svg
File:US 150 Illinois 1926.svg
File:US 150 Indiana 1926.svg
File:US 250 Ohio 1926.svg
File:US 550 Colorado 1926.svg
File:US 650 Colorado 1926.svg
File:US 159 Nebraska 1926.svg File:US 159 Missouri 1926.svg
File:US 160 Missouri 1926.svg
File:US 460 Missouri 1926.svg
File:US 460 Illinois 1926.svg
File:US 460 Indiana 1926.svg
File:US 460 Kentucky 1926.svg
File:US 166 Missouri 1926.svg
File:US 266 Oklahoma 1926.svg
File:US 167 Louisiana 1926.svg
File:US 169 Oklahoma 1926.svg File:US 169 Missouri 1926.svg
File:US 270 Oklahoma 1926.svg
File:US 270 Tennessee 1926.svg
File:US 271 Texas 1926.svg
File:US 271 Oklahoma 1926.svg
File:US 275 Missouri 1926.svg
File:US 275 Nebraska 1926.svg
File:US 276 Tennessee 1926.svg
File:US 276 South Carolina 1926.svg
File:US 177 Oklahoma 1926.svg
File:US 277 Oklahoma 1926.svg
File:US 377 Texas 1926.svg
File:US 281 Oklahoma 1926.svg
File:US 281 Nebraska 1926.svg
File:US 183 Oklahoma 1926.svg
File:US 183 Nebraska 1926.svg
File:US 283 Oklahoma 1926.svg
File:US 283 Nebraska 1926.svg
File:US 383 Nebraska 1926.svg
File:US 185 Wyoming 1926.svg
File:US 285 Texas 1926.svg
File:US 285 Wyoming 1926.svg
File:US 187 Wyoming 1926.svg
File:US 287 Oklahoma 1926.svg