I enjoyed these (and The Relentless Moon), but more for the "1950s America IN SPACE!" vibe than the "hard" AH (which I hadn't actually noticed, despite President Dewey).
I did, unusually for me, listen to them first (actually, I'm not sure I have even read them as words). Audible has Koval reading her own work, which I think helps to get the author-intended rhythm and intonation of speech which isn't necessarily obvious in the plain text.