Reproduction of a photograph of R. C. Lehmann, M.P.  According to Eckel, Lehmann was the owner of the “Contributors Book” which listed all of the names of the writers, and the names of their articles, as well as the date when each article appeared in “Household Words.”  Lehmann made this “Contributors Book” available to B.W. Matz, who was compiling the National Edition of the Works of Charles Dickens.