Her first New Yorker cartoon was probably something special, combining creativity and a fresh perspective. Maybe it had elements that made it stand out among other cartoons at the time.
One place to start is on dedicated comic book websites. They often have a wide range of options. Also, check out local flea markets or second-hand bookstores; you might get lucky and find some hidden gems there.
The main differences often lie in the way the story is presented visually and the amount of content included. For example, the anime might condense events or add new animations and effects that weren't in the manga.