December 1906 to 1907 – Sometime during this period, more likely on his 1907 trip to England, Sam enclosed a “Tuck’s Post Card” in a letter (the card itself is not postmarked) to daughter Jean. The card has a printed poem “To Mark Twain” about the “secret little maid,” so that famous picture is likely on the reverse side. He wrote:  

Jean dear, do you remember this picture with the accidental child in it?

      This is made in Germany, & is good work. I am so glad, so very glad, to hear that you are cheerful & happy, & are going to fight it out on Dr. Patterson’s lines & help him in every way you can to push your improvement along to a cure. Lovingly / Father [MTP]. Note: “Patterson” is likely Dr. Frederick Peterson. The postcard also bears the following, printed vertically on the left edge: “Raphael Tuck & Sons Series No. 2565. ‘Mark Twain.’ / ART PUBLISHERS TO THEIR MAJESTIES THE KING AND QUEEN.”