[219] Am. Pom. Soc. Rept. 81. 1852.
[220] Rutter Cult. & Diseases of the Peach 70. 1880.
[221] Horticulturist 1:318. 1846.
[222] Am. Farmer 100-102. 1875.
[223] Peach Yellows, Houghton Farm Experiment Department Ser. 3. No. 2:27-28. 1882.
[224] Horticulturist 503. 1849.
[225] N. Y. Farmer and Hort. Repository 46. 1831.
[226] Cultivator 255. 1844.
[227] Can. Hort. 15-16. 1878.
[228] Mich. Hort. Soc. Rpt. 275. 1880.