Normally, I would saySURE,except in this case the map is technically owned by Wizards of the Coast. The map is not intellectually mine. All I did was 'clean and scale' the map for use while playing the official adventure using miniatures. To cover yourself, you could name both myself and WotC as the original mappers (WotC moreso than me).
Hi Neon Knight,
Just thought it was polite to tell you I have downloaded one of your maps, a map called W4, from King of the Trollhaunt Warrens. I have used it to test a technique to make an ice cave and reposted it on a thread called snow map. Hope this is ok.