When the Lincoln funeral train arrived in Lancaster, Pa., at 11 a.m. on Saturday, April 22, about 20,000 mourners were waiting, including President James Buchanan and Congressman Thaddeus Stevens.
By the time the train reaches Philadelphia at 4:30 that evening, a half million people wait to follow the flag-draped coffin to Independence Hall. The body, placed with the head next to the Liberty Bell, is viewed until the hall closes at midnight. When the doors reopen at 10 a.m., crowds have been cued up for several hours.
Source: “In This Sad World of Ours, Sorrow Comes to All: A Timetable for the Lincoln Funeral Train” by Ralph G. Newman.