Biblio
“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. 
“Report On The Chronology Phase Of The Bristlecone Pine Study”. Tucson: Laboratory of Tree-Ring Research.
. 