This vintage promotional map from the Portland Cement Association highlights the Interstate 95 route through the District of Columbia, serving as an early advertisement for the burgeoning U.S. Interstate Highway System. The front cover features a prominent Interstate 95 shield for Washington D.C., with the phrase 'sign of the future!'. The interior unfolds to reveal a detailed map of the central and western United States, showcasing the planned and existing Interstate network. This collectible piece offers a glimpse into mid-century infrastructure development and is in excellent condition for its age.