Billboard Painters vertical was one of many dignitaries

was one of many dignitaries on hand to witness the signing and to hear President Johnson call on all Americans to help "eliminate the last vestiges of injustice in America

but London is shrouded in fog from a devastating stretch of brutal winter weather

Visible on the left are the Gaiety Theatre and an advertisement for Casperfield Cleveland Diamonds & Watches

to the Prayer Pilgrimage for Freedom at the Lincoln Memorial in Washington on May 17

Skokloster Castle

Billboard Painters vertical was one of many dignitariesBefore billboards were produced on vinyl panels and unrolled at their intended sites, they were an art form created on the spot by sign painters. Posters like this one for the movie "Silver Streak" were created as small works of art, then taken to the site, where they were divided into small squares matching a larger grid. Painters reproduced the work a square at a time.