Markall's School of Dance
Markall's School of Dance (at least 1970 - before 2000) was a dance studio in Thunder Bay, Ontario, Canada, founded by Ethel Markall and after she died it was co-owned by her son Bob Markall and granddaughter Wendy Holmquist. Wendy later closed Markall's School of Dance and opened her own studio in 2000, Dance Dynamics.
This is cool! For Markall’s School of Dance...Ethel’s son was named Bob Markall. He taught baton there and was well known for displaying his fire baton skills in parades.— Suzanne Hunt 
1967 took baton lessons from BOB. Did a few parades in Duluth, Silver Harbour and Port Arthur.— Angela Murphy