[3] In 1901, the SF&GC was sold under foreclosure to the Atchison, Topeka and Santa Fe Railway, who completed the remaining fifteen miles to the South Rim of the Grand Canyon.

[6] With the former Atlantic and Pacific Railroad now forming part of the Santa Fe's Southern Transcontinental main line between Chicago and the West Coast, Williams became a hub for tourists wishing to visit the Grand Canyon.

[7] The original Atlantic and Pacific station building on the opposite side of the tracks was retained and remains in existence to this day, serving as the Williams Chamber of Commerce since 1994.

In 1960, the Santa Fe built the "Crookton Cutoff": a re-routing of a 44-mile (71 km) stretch of the Southern Transcon to avoid the sharp curves and steep gradients of the line between Williams and Ash Fork.

[13] Williams Depot is now the southern terminus for the Grand Canyon Railway, containing a gift shop, coffee stand, rest room facilities, ticket counter and restaurant.