"I must also gratefully acknowledge an obligation of another kind to the accomplished artist, Mr. W. S. Herrick, to whom I am indebted for the curious and interesting facts on which the tales of "The Terribly Strange Bed" and "The Yellow Mask" are founded. Although the statement may appear somewhat superfluous to those who know me, it may not be out of place to add, in conclusion, that these stories are entirely of my own imagining, constructing, and writing. The fact that the events of some of my tales occur on foreign ground, and are acted out by foreign personages, appears to have suggested in some quarters the inference that the stories themselves might be of foreign origin. Let me, once for all, assure any readers who may honor me with their attention, that in this, and in all other cases, they may depend on the genuineness of my literary offspring. The little children of my brain may be weakly enough, and may be sadly in want of a helping hand to aid them in their first attempts at walking on the stage of this great world; but, at any rate, they are not borrowed children. The members of my own literary family are indeed increasing so fast as to render the very idea of borrowing quite out of the question, and to suggest serious apprehension that I may not have done adding to the large book-population, on my own sole responsibility, even yet." -- Wilkie Collins