Richard - do you know HP Robinson's 1884 'how to' book "Picture Making by Photography"? Your comments here reminded me of his advice in chapter V ... which was to leave the camera at home when 'prospecting' for pictures. Take a note book and pencil, he says. Of course, cameras in 1884 were 'an encumbrance'. I've tagged you on Instagram with the relevant passage in a page snap of my 1902 5th ed copy of the book. The Robinson reference would make a nice point of expansion for your note ... Cheers Peter A