Bruce's best known books are the nine 'Dimsie' books (1921–41), seven of them set in the 'Jane Willard Foundation' ('Jane's') in Kent, the other two in Dimsie's family home, 'Twinkle Tap' on 'Loch Shee' (Gael. 'Loch of the Fairies') in Argyll. Any exact site has never been identified. Jane's is situated on the Kentish coast, most likely at St. Margaret's Bay, but the buildings are clearly modelled on Bruce's own old school, Clarence House. The school stories follow Dimsie (Daphne Isabel Maitland) from 10 year old Junior to popular head girl. The Dimsie books are famous for the 'Anti-Soppists', a group of six girls acting for the good of the school.