Why isn’t Route 66 on ordinary maps?

Since Route 66 was decommissioned in 1985 it has ceased to be recognised as a US Highway and as such is no longer featured on standard maps. However, there are specialist maps available. If you are considering driving Route 66 then a highly recommended set of maps is the brilliant “Here It Is! The Route 66 Map Series” by Jerry McClanahan and beautifully illustrated by Jim Ross. Each of the 17″ by 21″ folding maps depicts a specific state and is a work of art in itself. The text on each map contains clear directions as well as commentary. Also incredibly useful is the “Route 66: EZ66 Guide For Travellers” by Jerry McClanahan. It’s a very highly regarded book and was developed in conjunction with The National Historic Route 66 Federation. I would consider both to be essential purchases. They are available from the US Amazon store at a very reasonable price.