Volume 3-4 has missing corner (page 955-56, 57-58 has hole, 61-62 has small missing piece) see photos.
Volume 15-16 has page separating from spine (page 5285-86) see photos.
Volume 19-20 has a name, address & date, written inside upper left, see photos.
All volumes show edge and corner wear.
Please see photos for best depiction of condition. All questions welcome.