I actually had a J dinosaur on my list, but couldn't find a useable illustration of one. I'll check my lists, see if I can find it ๐
That left Jurassic; was struggling a bit to figure out how to illustrate that, until I came up with the park/ark pun. Obviously no illustrations of that, but I managed to collage one together from 5 different source images, and I'm very happy with the result ๐๐ฆ๐ข
Edit: there are actually a lot of dinosaurs that begin with J, but no luck with finding PD illustrations of any of them.
Dinosaurs are notoriously tricky in regards to public domain stuff, extremely slim pickings ๐๐ฆ
It's one of my favorite parts of doing these, getting little puns and jokes in there โ glad you noticed, that makes it all worth it! ๐ A lot of the little details go unnoticed ๐
I sometimes have to be a bit creative in how I shoehorn finesse the various words into the posters ๐ I often find something really great, but for a letter I've already published, so it's a question of figuring out how to make it work for a different letter ๐