Childrens Festival 1911
The pictures are of the Childrens Festival which took place on June 24th in 1911 on the green at the Circle behind the Moor Pool Hall. The green is now the tennis courts for the Circle Tennis Club.
In picture 1 the building at the back is Harborne Tenants Estate office with the snooker and billiards club on the first floor with bay window. Note the awing over the verandah on the back of the Hall.
As for previous events the pictures show the circle has screens around the outside so presumably you had to pay to attend and watch the performances.
Its likely the Nettlefolds were in attendance. Are they there and can they be identified?