US Highway 20 was designated a federal highway in 1926. For the first half of the 20th century, it was the most important east-west road across northern Iowa, extending from the Mississippi to the Missouri River. The road connected 13 counties, four major metropolitan areas, and many smaller communities along its route. Fortunately, the historic two-lane road remains almost completely intact and can be driven much as travelers did in years gone by. Along Iowa's Historic Highway 20 celebrates such a trip, illustrated by more than 200 antique postcards that show the personality of the road: town and city scenes, rural vistas, rivers, bridges, and historic sites. Not to be forgotten are the tourist courts, hotels, diners, and gas stations that made travel possible.