This was a 52 volume encyclopedia on the natural history of Central America.

He edited the six volume encyclopedia Cappelens Dyreleksikon, published 1979-1981.

He was an editor of an index to the thirty-two volume Encyclopedia of Pennsylvania Biography.

This five volume encyclopedia on the Yiddish theatre is an essential reference source for information on actors, writers, and plays.

When Folwell assumed the University presidency there was but a single building, and the library consisted of only a 16 volume encyclopedia.

Not only did this 44 volume encyclopedia contain all biological knowledge of its time, it offered a different theory.

He compiled a 46 volume encyclopedia on many topics.

This monumental work Biologia Centrali-Americana (1879-1915) was to grow into a 63 volume encyclopedia on the natural history of Central America.

In 1897 he added Pears Cyclopedia, a single volume encyclopedia.

The work was suspended until 1987 when the Joseph R. Smallwood Foundation was established with a mandate to complete the five volume encyclopedia.