The Healey Museum will be open for 3 EXTRA days right after the Euromeet (June 10th-16th) from tuesday June 19th until Thursday 21st.
So the museum is open all week from June 19th until June 24th from 11:00AM until 5PM, especially for the participant at the Euromeet in the Black Forest.
(On monade June 18th most participants probably will be travelling from the Black Forest to their destinations. For that reason the Healey Museum will be closed).
Look here for more information on the Euromeet in the Black Forest, 10-16 June 2018.