1972, . Box 10, Folder 5 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994WATER AND RELATED POLITICAL ACTIVITIESCorrespondence
1973, . Box 2, Folder 6 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994YELLOWSHEETS AND LETTERS TO THE EDITORYellowsheets
1973-1974, . Box 10, Folder 6 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994WATER AND RELATED POLITICAL ACTIVITIESCorrespondence
1974-1975, . Box 32, Folder 5 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994MEDICAL ISSUESCorrespondence
1974-1979, . Box 2, Folder 7 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994YELLOWSHEETS AND LETTERS TO THE EDITORYellowsheets
1975-1976, . Box 11, Folder 1 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994WATER AND RELATED POLITICAL ACTIVITIESCorrespondence
1976-1979, . Box 32, Folder 6 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994MEDICAL ISSUESCorrespondence
1977-1979, . Box 2, Folder 11 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994YELLOWSHEETS AND LETTERS TO THE EDITORLetters to the Editor
1977, January - September, . Box 11, Folder 2 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994WATER AND RELATED POLITICAL ACTIVITIESCorrespondence
1977, October - December, . Box 11, Folder 3 Collection Context Lyrasis Special Collections Ben Yellen Papers, 1945-1994WATER AND RELATED POLITICAL ACTIVITIESCorrespondence
