All 25 books are in very nice condition - no missing pages and no missing endpapers, only a few books have one or two creased page corners, sight dust soiling/age darkening/foxing to outer page edges on a few books, all endpapers are clean and free from any tape residue or discoloration, NO TEARING OR SPLITTING OF PAGE BLOCK FROM INTERNAL HINGES (very very common defect with these early 3 investigator books - the glue on the page block is always separately from the boards), no color tearing of note to internal hinges from over-gluing (another common defect), NO FORMER OWNER'S MARKINGS OR USED BOOKSELLER STAMPS INSIDE (another common defect with children's books), no evidence of moisture exposure to pages/page edges/corners, no wear to board edges, only slight wear to board corners and spine tips on some of the books (wear spot to top left corner on spine on #25, paper loss at top spine tip on #26), no soiling or staining to boards, no color tearing and only slight color rubbing to a couple of boards, slight spine sun fading to #15 & #28 & slight sun darkening to spine on #22 otherwise NO SIGNIFICANT SPINE SUN FADING/ DARKENING TO ANY OF THE BOOKS, hardly any bumped board corners.
Note: These books come protected by removable clear Brodart book covers (cover are not taped to books - it can be simply slipped off if desired) which prevents further rubbing/soiling damage to the outer boards. Any white marks/glare lines in the photo are simply glare from the flatbed scanner reacting to this Brodart cover (and are not actual defects with the book).
#19 Phantom Lake (glossy boards); #20 Monster Mountain (glossy boards, wear spot at bottom left on spine); #22 Dead Man's Riddle (age darkening to boards & spine, stain to rear board); #26 Headless Horse (wear to spine tips & board corners).