A fundraiser for the Deke Slayton Memorial Space & Bicycle Museum On Thursday, August 4 you can meet retired Viroqua, Wisconsin astronaut Mark Lee! The Deke Slayton Memorial Space & Bicycle Museum in Sparta, Wisconsin will be having a fundraiser dinner with a presentation by Mark at the American Legion in Sparta. You will be able to ask him questions, take pictures, and get an autograph. This is a night you do not want to miss! Retired astronaut Mark Lee was born and raised in Viroqua, Wisconsin.