I'd suggest even before then in the early character guides with the idea that one could play a half-orc. Plus a good DM would give the party options in talking to "monsters" instead of just fighting their way through. A group of goblins probably wasn't evil, they were just trying to survive like anyone else, and sometimes they had to work with the actual evil in the game because they were tools being used for other purposes.

D&D took a lot from Tolkien, but I don't think the mythology was included. In wiki footnotes someone had an article in a 1982 Dragon magazine on the background of orcs from a half-orc viewpoint, but I can't find reference anywhere on that. Point being, Tolkien orcs were created by evil for evil purposes and aren't simply just a race of creatures. D&D orcs aren't like that from my understanding.