In Italy there is a "similar" (in the sense that it manages to explain calculus in a friendly and easy manner) book, that has been re-edited and re-published si

In Italy there is a "similar" (in the sense that it manages to explain calculus in a friendly and easy manner) book, that has been re-edited and re-published since - I believe - 1929 or so: https://books.google.it/books?id=oHPmx_v1H6QC&pg=PP5&hl=it&source=gbs_selected_pages&cad=2#v=onepage&q&f=false https://books.google.it/books?id=oHPmx_v1H6QC&pg=PP5&hl=it&s... the original is French, the Author Gustave Bessiere was an engineer, mathematician and inventor: https://books.google.it/books/about/Le_calcul_intégral_facile_et_attrayant.html?id=d7tKMQAACAAJ&redir_esc=y https://books.google.it/books/about/Le_calcul_intégral_facil... I don't think they are (yet) copyright free, though.