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Hansbrough, J. R. 729 
1936. TheTympanis canker of red pine. Yale Univ., 
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Hansbrough, J. R. 730 
1940. Sweetfern blister rust of pitch pines. In Important 
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Hansbrough, J. R. T31 
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1951. White pine blister rust. Brooklyn Bot. Gard., Plants 
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Hansbrough, J. R. 736 
1952. Cedar-apple rust. In Important Tree Pests of the 
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Hansbrough, J. R. Tore 
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1952. Strumella canker of oaks. In Important Tree Pests 
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1952. Sweetfern blister rust of pitch pines. In Important 
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