Another amusing thing I recall in connection with the serial publication was this:  The art editor of the magazine wrote to the officials of the railroad, the name of which I gave in the first version but which I now withhold, saying that the magazine had a story of a snow-bound train on the railroad in question and asking for pictures of snow-bound trains to help the artist illustrate it.  By return mail came an indignant remonstrance almost threatening a lawsuit because the railroad in question, one of the southerly transcontinental roads, made a point in its appeal to travellers that its trains were never snow-bound!  The art editor who was not without a vein of humour wrote back and asked if they could furnish him with pictures of snow-bound trains on competing roads and they sent him a box full!  C.T.B.]