I am trying to locate where the land held in the name of ** PGC Smith ** (a relative of mine) in the 20s/30/40s. It looks like the information will be on the ** cadastral map 40-chain AG2 (1930) series map 14N ** (which should show Nambour, together with the names of landholders). the Open Data Portal includes map 15N (for 1930)which shows the vicinity and nearby landmarks, and has a notation that it adjoins map 14N. The page with links (https://www.data.qld.gov.au/dataset/historical-cadastral-map-seriesqueensland/resource/214da86e-9ff0-4fef-bcea-285d0f0c5263?inner_span=True)
says a full set is available.