Bibliography of butterflies

Welling, Eduardo Cecilio, and Thomas Chadbourne Emmel

1973. The 1972 field season summary. Northern Neotropics. South America. News of the Lepidopterists' Society 1973(2): 19 (15 March) [general; Mexico, Colombia, Ecuador, Brazil]

1974. The 1973 field season summary. Northern Neotropics. South America. News of the Lepidopterists' Society 1974(2): 16-18 (25 June) [general; Mexico, Belize, Ecuador, Brazil]

1976. The 1975 field season summary. The Northern Neotropics. South America. News of the Lepidopterists' Society 1976(2): [16]-[18] [general]