Mack Truck Historical Museum
The Mack Trucks Historical Museum in Lehigh Valley contains a truckload of historical documents and artifacts from Mack's long and storied history as the leading American truck manufacturer and world-renowned brand name, including antique vehicles like the original sightseeing buses built by Jack and Augustus Mack in the first decade of the 20th century. There is also the gas-operated, open-air bus that carries up to 26 tourists around the streets and sights of Chicago. You'll see a collection of photos, many dating back to 1905 (Mack records include every chassis it manufactured since 1905). Tours are available.