President Johnson signs the Highway Beautification Act. Lady Bird Johnson had strongly advocated for the bill, which called for the removal of billboards, roadside junkyards, and certain outdoor advertising. It also encouraged scenic enhancements, like flower plantings along roadways.

“How the Highway Beautification Act Became Law,” Federal Highway Administration, U.S. Department of Transportation, June 27, 2017. https://www.fhwa.dot.gov/infrastructure/beauty.cfm

President Lyndon B. Johnson signing the Highway Beautification Act. White House Photo Office Collection, 11/22/1963 – 1/20/1969; Johnson White House Photographs, 11/22/1963 – 1/20/1969; National Archives. https://catalog.archives.gov/id/2803410