Biblio
“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. 
“Continuation Of Studies On The Dendrochronology Of Bristlecone Pine (Pinus Aristata Englem.) (Continuation Of Research Grant Nsf-G 19949): A Research Proposal ”. Tucson: Laboratory of Tree-Ring Research.
. 1963. 