I haven't done any genealogy for yonks, but seeing this photo again & again finally got at me & I had to try to find out who it was & try to get it back to where it belongs. My original guess was late 1920s/ early 1930s. However from what you have said & what I found out about this family that it was 1927/28 as JH Waugh is the 5th generation. Minnie married Augustus Jackson in 1926 and the baby (Valerie) is 4 months old.
it is a little tatty....someone has put a coffee mug on it and the corners are slightly torn.....Nothing that Photoshop or one of the free programmes wouldn't fix.
PM me if you want it, or a copy.