I have not been following the situation very closely so I would confirm this with someone else, but I believe the actual letter has not been made public. A few images have been floating around that are “artist’s interpretations”, and occasionally these have been presented as Trump’s actual drawing in various forums.

Again, could be off, been a busy week this is just what I gathered from skimming comments

Here

Edit: note this may not actually be the letter. As people have pointed out below this may be someone passing off an interpretation of it as the legitimate thing.

I think it was posted on lemmy a few days ago. I’ll look for it.

I’ve also seen this one on letterhead with different spacing.