As federal Visitor Centers, America the Beautiful passes are sold at Smithville and Longview Project Offices.
NOTE: Smithville, Longview and Blue Springs lakes camping and day use areas DO NOT honor the American the Beautiful passes as they are operated by county and city agencies under cost-shared lease agreements. For discounts offered outside the federal pass program, please check with Clay County Mo., City of Smithville, Mo., and Jackson County Mo.
For more information on passes, follow the link below.
http://store.usgs.gov/pass/index.html