Note 1: Re. Birt Acres, see C.W.Ceram: Archeology of the Cinema, pp. 157, 187, 188, 201, 202, 203-205. Marguerite Engberg: Danish silent film I, p.13. - Relating to. Walter Booth (1892-1971) see Maurice Horn: The World Encyclopaedia of Cartoons, pp. 129-130. Walter Booth was also a cartoonist, as he in Dansk Komiklex, 1st edition, p.19-20, is credited for the cartoon Rob the Rover, which under the title "Mellem Sydhavets Pirater" was printed in Familie Journalen in the years 1923-1925. The series was later renamed "Willy on Adventure", but was then drawn by Harry Nielsen, who was also responsible for the hugely popular cartoon Bamse and Dukkelise. This with the Willy comics, the publishers of the comics Who - What - Where have obviously not been aware of, except that one pp. 144-145 i.a. mentions that “what the then editor Mogens Aller wanted to say about it was that he had bought it from a cartoonist in London. Who he was remains a secret between old Aller and him, a secret that they both took with them to the grave. ” But the "secret" has been clarified by the author and editor Philip Treschow. See more about this in the listed works.