On the blog, I am posting notes on running the Ruined Tower of Zenopus using old school D&D. The first post covers pages 1-5, the bulk of which is stats for my customized Wandering Monster table. Notes are written up for Holmes Ref (Holmes Basic + OD&D) but should be suitable for any old D&D.
Just noticed that DMs Guild is having a Cyber Monday sale, and 𝗧𝗵𝗲 𝗥𝘂𝗶𝗻𝗲𝗱 𝗧𝗼𝘄𝗲𝗿 𝗼𝗳 𝗭𝗲𝗻𝗼𝗽𝘂𝘀 is included, so it is currently only $1.59. Sale is on for about 16.5 hours more.