Scum Swamp (formerly "Krakeland Marsh") is a mini-wilderness setting for OD&D, created by Jennell Jaquays back in 1977. It includes a dungeon as well as suggested locations for four mini-dungeons, published previously in her fanzine "The Dungeoneer".
Like the "Dungeon Master's Kits" released by Wee Warriors and material by Judges Guild, the mini-dungeons appearing in "The Dungeoneer" predate the earliest modules released by TSR, and are filled with untamed possibilities of the original game.
Map of Castle Krake and Slime Swamp, originally published in "The Dungeoneer" #6 (October, 1977)
Night of the Walking Wet:
"Night of the Walking Wet" is a two-part adventure by Jennell Jaquays, Randy Cox, and Tamara Wieland, originally published in The Dungeoneer #5 (June, 1977) and #6 (October, 1977).
The adventure was re-issued as part of "The Dungeoneer Revisited Reflections by Jennell Jaquays & Night of the Walking Wet (Original and Reloaded)" by NTRPG in 2017.
JG 73 "The Adventuresome Compendium" reprinting the contents of "The Dungeoneer" #1-6
The Dungeoneer #1-6 was published quarterly from June, 1976 to October, 1977. Jaquays sold the fanzine to Chuck Anshell, who produced issues #7 (March/April, 1978) and #8 (May/June, 1978), before it was purchased by Judges Guild.*
*see History of the Dungeoneer Fanzine from the Acaeum
Judges Guild published a compendium of issues #1-6 (JG 73) followed by The Dungeoneer #9 (JG 81) in January/February, 1979 and The Dungeoneer #10 (JG 84) in March/April, 1979, also re-issuing The Dungeoneer #7 (JG 85) and The Dungeoneer #8 (JG 86).
The Dungeoneer #9-18 was published bimonthly by Judges Guild from January/February, 1979 to July/August, 1980, after which it merged with Judges Guild Journal, starting with The Dungeoneer #19/Judges Guild Journal #22 (August/September, 1980).
The newly branded "Dungeoneer Journal" #23-25 was published bimonthly from October/November, 1980 to February/March, 1981; making way for Judges Guild's "Pegasus" #1-12, published bimonthly from April/May, 1981 to February/March, 1983.