Dennison's labels, [34].
Denver public library handbook, [31].
Depository libraries, [110]-[111].
Dewey, or Decimal system of classification, [79], [81]-[83].
Dial (semi-monthly), [32].
Dictionaries, aid in reference work, [53].
Dictionary catalog, Cutter's rules for, [31];
value of, [114];
defined, [97].
Discarded books, [113].