You seem to have an extremely high standard for what isn't of "very limited quality," if one has to aspire to the level of Grothendieck, Goedel, etc.. I've just barely skimmed the first few years and found several serviceable papers -- not terrible, not great, just average stuff like people would publish today.

But, since you asked, here's one of excellent quality: https://users.renyi.hu/~p_erdos/1949-03.pdf