Tolkien’s Lord of the Rings maps
The TAI links below lead to the Tolkien Art Index, where you can find a reasonably complete listing of reproduction information.
Drafts for The Hobbit
Technically, the first maps that Tolkien worked on for The Lord of the Rings were really for The Hobbit, since the novels share the same basic location and time.
Thror’s Map & Erebor
236, 137, more
The Hobbit was first published in 1937, and contained Thror’s map (TAI #3) and Wilderland (TAI #14). Tolkien himself drew the maps that appeared in ’37 and in (at least) the vast majority of English editions sold by his publishers.