ee BIBLIOGRAPHY OF FOREST DISEASE RESEARCH 89 
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1950. Oak wilt: Map showing known distribution in the 
United States, January 1950. U. S. Bur, Plant 
Indus,, Soils, and Agr, Engin, , Plant Dis, Rptr. 
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1950. Oak wilt and its significance. Cross Tie Bul, 31 (2): 
5-9, illus, 
May, Curtis, 1344 
1950, Phomopsis blight of juniper seedlings, U. S. Bur. 
Plant Indus,, Soils, and Agr, Engin, 2 pp. 
[Processed, ] 
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1952, Dogwood diseases in the East. U. S. Bur, Plant 
Indus., Soils, and Agr, Engin, 4 pp. [Processed.] 
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[1953. ] The Dutch elm disease problem, Natl, Shade Tree 
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May, Curtis, 1347 
1953. [Flowers of trees, ] Prof. Gard. 5: 251, 
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1953. Review of phases of research on oak wilt, Eastern 
Plant Board, Oak Wilt Meeting Report. 26 pp. 
[Processed, | 
May, Curtis, and Baker, Whiteford L, 1349 
1952. Insects and spread of forest-tree diseases, U. S. 
Dept. Agr. Yearbook (Insects) 1952: 677-682, 
illus, 
May, Curtis, and Collins, C. W. 1350 
[1938, ] The Dutch elm disease in the United States and its 
insect vectors, West, Shade Tree Conf, Proc, 
(1938) 5: 49-54, 
May, Curtis, and Douglas, W. R. 1351 
1944, Some factors affecting the value of pruning for Dutch 
elm disease. Arborist's News 9 (5): 33-35, 
May, Curtis, and Gravatt, G. F. S52 
IgS). -vhesPutchvelm disease. U. S. Dept, Agr. Cir, 170, 
10 pp., illus. 
_ May, Curtis, and Gravatt, G, F. 1353 
1940, Two native vascular diseases of eastern hardwoods, 
In Important Tree Pests of the Northeast, edited 
by Committee on Forest Protection Leaflets, New 
England Section, Society of American Foresters, 
pp. 151-154, illus, 
May, Curtis, and Gravatt, G. F. 1354 
1952, Two native vascular diseases of eastern hardwoods, 
In Important Tree Pests of the Northeast, edited 
by Committee on Tree.Pest Leaflets, New England 
Section, Society of American Foresters, Ed, 2, 
pp. 118-121, illus, 
May, Curtis, and Liming, O, N, 1355 
1931. A serious elm disease in Ohio, Ohio Agr. Expt, Sta, 
Bimo, Bul, 150: 106-112, illus, 
May, Curtis, Liming, O. N., and Alexander, Thelma, 1356 
1931, The Dutch elm disease in Ohio, (Abstract) 
Phytopathology 21: 125, 
