Yes there is a picture of him (Derrick) talking to Reg Saunders who had a book on him written called "The Embarrassing Australian" the story of an indigenous soldier who rose through the ranks to Captain level I think my book is buried in the shelves so running from memory.
In regards to my Nicolson post we were in our P-2 gear with B/A sets training then put in a room which had a fire in it the room temp was 280 degrees and believe me it was rather warm and we were in well made fire fighting kit not woolen jackets and trousers.