Postcard showing the Trig Point Observatory on Mt Dandenong. Two women and a man are standing on the rock base. Early 1900s.Printed on front of postcard: "OBSERVATORY," DANDENONG MOUNTAINS (VIC.) Printed on back of postcard: Photographed by ERASMUS B. ALLAN, Fitzroy ASK FOR Allan's "Guide to the Dandenong Mountains." Published Shortly. Price 1/- HUTCHINSON'S Lit. Collins Street Melbourne.mt dandenong, trig point, mt dandenong observatory, erasmus b allan