The city is home to one of the few Georgia counties with a museum that focuses mainly on African-American history. The Coweta County African American Heritage Museum and Research Center, or Caswell House, was opened in July 2003 in a donated mill village house once owned by Ruby Caswell. The museum sits on Farmer Street on an old, unmarked slave cemetery. It has collected hundreds of family genealogical records by interviewing residents and going through the census records. The museum also houses the Coweta Census Indexes from 1870 to 1920. The first Black library in the county was the Sara Fisher Brown Library. Built in the 1950s, the library has since been converted into the Community Action For Improvement Center. The Farmer Street Cemetery is the largest slave cemetery in the South, and may be the largest undisturbed one in the nation. It is within the city limits of Newnan. Geography Newnan is located in the center of Coweta County at (33.376411, -84.788648). U.S. Route 29 passes through the center of the city, leading northeast to Palmetto and south to Moreland. Interstate 85 passes through the eastern side of the city, with access from exits 41, 44, and 47. I-85 leads northeast to downtown Atlanta and southwest to Montgomery, Alabama. U.S. Route 27A leads northwest from the center of Newnan to Carrollton. According to the United States Census Bureau, Newnan has a total area of , of which , or 1.88%, is covered by water. Climate The climate is moderate with an average temperature of 64.3°F (45.8° in the winter and 79.1° in the summer). The average annual rainfall is 51.84 inches. Transportation Major roads Interstate 85 Outer Perimeter State Route 34 State Route 34 Bypass State Route 16 State Route 70 Lower Fayetteville Road Newnan Crossing Boulevard East Newnan Crossing Bypass U.S. Route 29 U.S. Route 27 Alternate Pedestrians and cycling LINC Airports Newnan–Coweta County Airport provides chartered air service and flight training. Railroads Until the mid-1950s the Central of Georgia operated two trains daily in each direction, through Newnan from Atlanta to Columbus, in its Man O' War service. The Central continued a single Man O' War train until 1971 when Amtrak took over most interstate passenger service. Until 1970, the city was a stop on the Southern Railway's Crescent from New Orleans to New York City, via Atlanta. Into the mid-1960s, the Southern's Crescent and Piedmont Limited