I have just uploaded my latest conversion guide of 1e D&D modules for 5e rules to DMsGuild.
EX1 Dungeonland is chock full of special creatures and unique NPC's so I think any Dungeon Master will get their dollars worth with this particular conversion guide.
Please note that the Classic Modules Today products are not the original module. You need a copy of the original 1e adventure module to use these conversion guides.
This is my fifth guide completed and I've adjusted Challenge Ratings and XP awards to reflect the ramped up level progression found in 5e. In an attempt to mimic the old-school flavor of 1e characters will not provide as much XP as straight treasure.
My conversion guide for B2 The Keep on the Borderlands is the first one I did and needs a major overhaul to reflect my inclinations on XP awards. It also needs a major overhaul on "Spell Conversion Notes" and "Magic Item Conversion Notes". If you have already purchased this particular guide look for the 2.00 version going up Monday morning.