Robert Avey Ward, Dictionary of National Biography… (1899)
“ Miss Umphelby also wrote and published ‘A Guide to Jewish History.’ ‘“The Child's Guide to Knowledge,” which came to teachers and pupils of the present century as a warmly welcomed novelty, was in truth on the plan of the ‘Elucidarium’ attributed to Lanfranc [q. v.] , but differed from it in form, in so far as the information is extracted from the pupil, not from the teacher. ... None of the new productions could rival in success “The Child's Guide to Knowledge.” ”
