Folder 34: Negative Ions

• File
• 1992

Part of Charles A. Lewis papers

Folder 1: American Horticulture Society (AHS), General

• File
• 1972

Part of Charles A. Lewis papers

Folder 6: AHS

• File
• 1997

Part of Charles A. Lewis papers

Folder 9: Bioneers

• File
• 2001

Part of Charles A. Lewis papers

Folder 12: Bioneers

• File
• 2001

Part of Charles A. Lewis papers

Folder 14: Pennsylvanis Horticulture Society

• File
• 1989, undated

Part of Charles A. Lewis papers

Folder 22: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 24: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 26: Flowers

• File
• 1973

Part of Charles A. Lewis papers

Folder 15: Pennsylvanis Horticulture Society

• File
• 1989, undated

Part of Charles A. Lewis papers

Folder 17: Rio Abajo Garden Alliance

• File
• 1995-1996

Part of Charles A. Lewis papers

Folder 25: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 20: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 21: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 28: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 29: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 16: Rio Abajo Garden Alliance

• File
• 1995-1996

Part of Charles A. Lewis papers

Folder 18: Parks

• File
• 1973

Part of Charles A. Lewis papers

Folder 19: General

• File
• undated

Part of Charles A. Lewis papers

Folder 23: Council

• File
• 1994-1995, 1998-1999

Part of Charles A. Lewis papers

Folder 27: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 1: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 3: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 5: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 7: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 11: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 12: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 34: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 8: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 10: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 13: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 14: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 30: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 31: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 33: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 35: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 2: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 32: Geriatric

• File
• 1970-1991

Part of Charles A. Lewis papers

Folder 4: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 6: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 9: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 15: Handicapped/Disabled

• File
• 1968, 1973-1976, 1982

Part of Charles A. Lewis papers

Folder 21: Interaction

• File
• 1973

Part of Charles A. Lewis papers

Folder 24: Interaction

• File
• 1975

Part of Charles A. Lewis papers

Folder 25: Interaction

• File
• 1976

Part of Charles A. Lewis papers

Folder 26: Interaction

• File
• 1977

Part of Charles A. Lewis papers

Folder 29: Interaction, Sixth International People-Plant Symposium, Chicago, IL

• File
• July 20-22, 2000

Part of Charles A. Lewis papers

Folder 1: Philosophy

• File
• 1967, 1970

Part of Charles A. Lewis papers

Folder 2: Philosophy

• File
• 1972

Part of Charles A. Lewis papers

Folder 4: Philosophy

• File
• 1982-1983

Part of Charles A. Lewis papers