You have an opportunity to participate in this contest because the deadline has been extended! It is the The Super Secret Happy Birthday Gary Gygax Giveaway Bundle Extravapalooza! And it’s hosted by the Secret DM. Submit your dungeon entries to firstname.lastname@example.org with the subject line Gygax Contest.
I doubt my entry will win anything, as it is formatted more how I do things now and I’m not sure I can manage a 1e feel. Still, by mentioning it on my blog, I can participate with multiple vectors and support the contest all the more. Check it out!