Note by T.H. Kneen 4 March 1992, "Machinery under maintenance is the Howard Rotary Hoe." Photograph used as an illustration in, "Green Grows Our Garden," A.P. Winzenried p99. Caption reads, "George Grumont demonstrating maintenance on a rotary hoe to students Peter Trudgeon, Oliver Frost, Thea Rimmer, Dian Durrant, Lex Hodge." Same students as B91.167.2 copies black and white photograph. 5 students standing around a Howard rotary hoe with a demonstrator teaching maintenance. Cactus Collection in the background.On reverse, Photograph by Publicity Branch Victorian Department Of Agriculture Ref. No. c.1695 I. machinery, maintenance, howard rotary hoe, green grows our garden, a.p. winzenried, george grumont, students, peter trudgeon, oliver frost, thea rimmer, dian durrant, lex hodge." same students as b91.167., student outside class, cactus collection, outside class