Hannu Harkola has updated the FIDE Album Index by adding the last three Albums. The booklet (A4, 210 pages, PDF) contains the combined registers of all 24 published FIDE Albums 1914-2015. It is in the same location as the previous version:
http://www.saunalahti.fi/~stniekat/books/FIDE_Album_Index.pdf.
On WFCC website the Album Index can be found on the bottom of FIDE Albums page:
FIDE ALBUM INDEX 1914-2015
Booklet (A4, 210 pages, PDF) contains the combined registers of all 24 published FIDE Albums 1914-2015.