 By the 1970s, the books were considered outdated, and several updated versions were issued.Facsimiles of two of the original volumes were reprinted in 2007 to cater for the nostalgia market.The "Janet and John" books were originally based on the "Alice and Jerry" series published by Row Peterson and Company in the United States, a series that had been written by Mabel O'Donnell and illustrated by Florence and Margaret Hoopes.