Dr. Julia F. Morton’s citation is wrong
Morton, J.F. 1987. White sapote, p. 191–196. Fruits of warm climate. Creative Resource System, Winterville, NC.
The book was notably self published by Julia. Should be Julia Francis Morton, Miami, Florida. Not even via her MORTON COLLECTANEA.
The distributor should not get publishing credit. Similar to the fumble California Rare Fruit Growers published in a recent Annona article. They credited Purdue! ... which simply hosts the book online, as we all know very well. Once again Julia’s self publishing feat goes unnoticed.
Title page replicated here
https://www.hort.purdue.edu/newcrop/morton/index.htmlThat’s my point, she did this on her own and the waves are still being felt.