Subject (Genre)
- Bibliography15
- Humor14
- Grammars13
- Indexes13
- polyglot dictionaries13
- Booksellers' advertisements12
- Nomenclature12
- Reverse indexes12
- Handbooks, manuals, etc11
- Juvenile literature10
- Pamphlets10
- Early works9
- Encyclopedias8
- Spellers8
- Databases7
- Nomenclature (Popular)7
- Sources7
- Style manuals7
- Subscription lists (Publishing)7
- Catalogs6