General Encyclopaedias

The popular general encyclopedias are most impressive by their size and number of volumes. The famous adult encyclopaedia are remembered as the ABC's - that is Americana, Britannica and Collier's. These encyclopedias are very useful for comprehensive coverage of various topics. For example, if one wants to know all about aeroplanes or butterflies, a good common encyclopedia would be a good starting point. For any American topic, say some historical aspect or geography of some place, the Encyclopedia Americana would be particularly useful.

Examples

1. Collier's Encyclopedia. 24 volumes. Annual Revision. First Published 1949-51. 
2. EncyclopediaAmericana. 30 volumes. Annual Revision. First Published 1929-33. 
3. The New Encyclopaedia Britannica. 15th Edition. 32 Volumes. Annual Revision. First Published as The New Encyclopaedia Britannica since 1974. Published earlier as Encyclopaedia Britannica since 1768-71, first edition.