|City of Adventure Series (CA1, CA2)||
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Both modules consist of three scenarios.
CA1 states on the cover that it is for 5 to 6 characters, though the first page of the module booklet says 4 to 5 characters.
The city campaign setting is detailed in the Lankhmar: City of Adventure accessory. The world of Newhon also has a pantheon of deities, described in Deities & Demigods (as well as its successor, Legends & Lore).
There are no discernable differences in printings.
Another failed experiment, more or less. These modules remain relatively obscure.
Swords of the Undercity
Swords of Deceit