If by ‘lost’ you mean in Steve Purcell’s drawer and if by ‘unearthed’ you mean removed from said position. Over on his blog Steve has posted a Sam & Max comic that he previously intended to use in an anthology, but he never got round to finishing it. Check it out here! The second to last panel is my favourite.
As a slight aside, I generally avoid reposting anything that Steve Purcell puts up on his Sam & Max blog as I figure that if you’re here then you’re also there, but this was too good to pass up. However, if you disagree with this logic and wouldn’t mind a news item when something is posted (if not every time then perhaps bi-weekly) then let me know in the comments.