- Girl Scouts of Black Hawk Council Where Girls Grow Strong.sm GIRL SCOUT BIRTHDAY IN PJs PARTY REGISTRATIONS STILL BEING ACCEPTED As a celebration of its 75th Anniversary, and the 90th Anniversary for Girl Scouts of the U.S.A., Girl Scouts of Black Hawk Council are hosting an anniversary celebration, a birthday party and a sleepover for the girls all in one. The event will take place at the ...www.girlscoutsofblackhawk.org