Created separate book source for Pictures 2 — that is, the second edition of Pictures by J.R.R. Tolkien; switched figures 23 and 24 in the first edition, which I renamed Pictures 1. This affects TAI #25, TAI #56TAI #57, and TAI #58; this also affected some of the H&A numbers. As with The Annotated Hobbit, all entries for the first edition hold true for the second unless otherwise notated; therefore, very few entries exist for Pictures 2.
For all entries in Pictures 1 and the new Pictures 2, moved the catalogue/figure number from the page column to the figure column, and added a [bracketed] page number referring to the physical (but unnumbered) page in the book.
