Thanks to those who had the foresight, or made the effort post-contest, to provide level packs. I'd love to see any further contributions to help recover the missing entries.
If anyone wants a hack from past contests, I would gladly share when possible.
2015-03-08 Missing VLDC 2011 (#4) entries listed
2015-04-12 Found the remaining 24hosmw3 entries via Hadron
2015-04-14 Missing 24hosmw6 entries listed
2015-04-14 Missing Strawberry LDC 3 entries listed
2015-04-16 Missing Chocolate LDC 3 entries, other contests listed
2015-04-16 Found the remaining 24hosmw6 entries via aj6666
2015-05-19 Found the remaining Secret Santa entries via an unknown contributor
2015-05-19 Found the remaining VLDC4 entries via an unknown contributor
2015-05-19 Found an older version of a missing Bowser's Castle entry
2015-05-29 Found three Beginner LDC entries
2015-06-01 Found the remaining Vague Gimmick entries
2015-06-01 Found an older version of a missing Linear LDC entry
2015-06-10 Found the remaining Joke Contest entry (SMW Topsy Turvy)
2015-06-17 Found the remaining Puzzle Contest entry (SCORPION's Iceberg)
2015-06-18 Received the remaining STF GFX contest entry from S.R.H.!
2015-06-25 Found one more Beginner LDC entry
2015-08-21 Missing JDC Title Screen LDC 2 entry listed
2015-11-11 Missing Themed SMW Contest entry listed, recent contests added
2015-11-16 Found Boss 1 contest, sorted by importance and chronologically
2016-02-09 Missing VLDC8 Overworld Contest entries listed
2017-06-20 Found the remaining HLDC entry (Last Minute Entry)