Biblio
“Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1985. 
“Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1984. 
“Dendrochronology Of Bristlecone Pine (Pinus Aristata Engelm) As A Basis For The Extension Of Dendroclimatic Indices: Research Proposal”. Tucson: Laboratory of Tree-Ring Research.
. 1960. 
“Dendroclimatic Variability In The American Southwest A.d. 680 To 1970”. Tucson: Laboratory of Tree-Ring Research.
. 1977. 
“Eine Jahrringanalytische Studie Zum Nadelbaumsterben In Der Schweiz”. Berichte Rapports. Berichte Rapports. Birmensdorf: Eidgenossische Anstalt fur das Forstliche Versuchswesen.
. 1983. . 1977.
History of Droughts in Washington State_1977.pdf (45.75 MB)

“Interim Progress Report Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1968. 
. 1966.
Ferguson_Interim Report on the Dendrochronology of Bristlecone Pine Prior to 4,000 B.C._1966.pdf (2.65 MB)

“Proposed Contract With The Environmental Sciences Division, Oak Ridge, Tn. 37831 For Research On 'detection Of Forest Response To Increased Atmospheric Carbon Dioxide' 1985”. Tucson: Laboratory of Tree-Ring Research.
. 1985. 
“Proposed Contract With The Environmental Sciences Division, Oak Ridge, Tn. 37831 For Research On 'detection Of Forest Response To Increased Atmospheric Carbon Dioxide' 1984”. Tucson: Laboratory of Tree-Ring Research.
. 1984. 
“Ramifications Of Chronology Building In Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1963. 
“Reconstruction Of Past Climatic Variability (A Progress Report) 1 January Through 30 June 1974”. Tucson: Laboratory of Tree-Ring Research.
. 1974. 
“Reconstruction Of Past Climatic Variability (A Progress Report) 30 June Through 31 December 1974”. Tucson: Laboratory of Tree-Ring Research.
. 1974. 
“Report On The Chronology Phase Of The Bristlecone Pine Study”. Tucson: Laboratory of Tree-Ring Research.
. 
“Some Aspects Of The Use Of The Annual Rings In Trees In Climatic Study”. The Smithsonian Report For 1922. The Smithsonian Report For 1922.
. 1922. 
“Steward Observatory”. Annual Report Of The University Of Arizona . Annual Report Of The University Of Arizona .
. 1939. “Tree-Ring Growth In High-Altitude Bristlecone Pine As Related To Meteorological Factors: Research Proposal”. Tucson: Laboratory of Tree-Ring Research.
. 1968. 
“Tree-Ring Studies Of The Pueblo De Acoma: A Preliminary Report”. Tucson: Laboratory of Tree-Ring Research.
. 1987. 
“Tree-Ring Studies Of The Pueblo De Acoma: A Preliminary Report Supplement No. 1”. Tucson: Laboratory of Tree-Ring Research.
. 1988. 
“Tree-Ring Studies Of The Pueblo De Acoma: A Preliminary Report Supplement No. 2”. Tucson: Laboratory of Tree-Ring Research.
. 1988. 
“Unsolicited Proposal Submitted To The Department Of Energy For Dendrochronology Of Bristlecone Pine”. Tucson: Laboratory of Tree-Ring Research.
. 1980. 
“Western U.s. Tree-Ring Index Chronology Data For Detection Of Arboreal Response To Increasing Carbon Dioxide”. Tucson: Laboratory of Tree-Ring Research.
. 1985. 
. 1991.
. 1991.