2. Smith, J. Russell. Tree Crops, A Permanent Agriculture. Revised edition on schedule for 1949 publication. Inquire of author at Swarthmore, Pa.
3. Smith, J. Russell, How to Graft Nut Trees. May be purchased
from Walnut Lane Press, Swarthmore, Pa. Illustrated with diagrams.
9 pp. 25c.
4. Smith, J. Russell. The Planting, Fertilization and Care of Nut
Trees and Persimmon Trees. Available from Sunny Ridge Nursery,
Swarthmore, Pa., price 25c.
5. Reed, C. A. Nut Tree Propagation. U. S. Department of Agriculture Farmers' Bul. 1501. For sale only. 5c (coin) from Supt. of Documents, U. S. Government Pointing Office, Washington 25, D. C.
6. Mattoon, W. R. & Reed, C. A. Planting Black Walnuts. U. S.
Department of Agriculture Leaflet 84. Free from Department of
Agriculture; Washington, D. C.
7. Moznette, G. F. et al. Insects and Diseases of the Pecan and
their Control. U. S. Department of Agriculture-Farmers' Bul. 1829.
May be had from U. S. Department of Agriculture, Washington, D. C.
8. Sitton, B. G. & Akin, E. O. Grafting Wax Melter, U. S.
Department Leaflet 202. Free from U. S. Department of Agriculture,
Washington, D. C.
9. Sitton, B. G. Pecan Grafting Methods and Waxes. U. S.
Department of Agriculture Circ. 545. May be had from U. S.
Department of Agriculture, Washington, D. C.
10. Sitton, B. G. Vegetative Propagation of the Black Walnut.
Mich. Sta. Tech. Bul. No. 119. Sept., 1931. Available from Michigan
State College, E. Lansing.
11. MacDaniels, L. H. Nut Growing. Cornell Univ. Ext. Bul. 701.
From College of Agriculture, Ithaca, New York.