(Alan) Keith Henderson (1883-1982) was the author of Letters to Helen (1917), Palm Groves and Humming Birds (1924), Prehistoric Man (1927) and Pastels (1952). "Well, here we are in the slowest train that ever limped, and I've been to sleep for seven hours. The first good sleep since leaving England. And now, as we've got twenty-eight hours to go still, there's time to write a letter. The last three days' postcards have been scrappy and unintelligible, but we departed without warning and with the most Sherlock Holmes secrecy. Not a word about which ports we were sailing from or to."