I've come across a few curious 4" x 3" (or slightly larger) books of the same titles that LLL/Robert K Haas sold, with many similar details. With over 30 million Little Leather Library books sold, it's no suprise other publishers have taken notice. While miniature books was not at all something new when Little Leather Library began producing them, these publishers definitely took after LLL's specific dimensions, titles, and other aspects, perhaps by copying or by obtaining the very same plates that LLL used.