David Letterman celebrates his son's birthday on historic Colo. train

(CBS/AP) Instead of getting his son a train set, David Letterman took his son Harry for a ride on the real thing.

Harry celebrated his 8th birthday with a ride on a historic tourist train in southwestern Colorado.

According to The Durango Herald, Letterman and his son, Harry, took a ride on the Durago & Silverton Narrow Gauge Railroad on Saturday.

Railroad owner Al Harper told the newspaper that six adults and four children were aboard a private train for the trip from Durango to Cascade Canyon.

Harper said he gave the late night host a tour of the railroad's museum and roundhouse, saying he could have not been nicer.

The railroad started running in 1882, mainly to haul gold and silver from mines. Its coal-fired trains now offer riders views of the San Juan Mountains.