Answer:
The two white women that Zora meets are Mrs. Johnstone and Miss Hurd from Minnesota who visits the school unannounced. Zora described their fingers to be "long and thin, and very white". These white ladies came down from the North to visit the village school because they see a Negro school as something strange to them.
As one of the best students in the class, Zora is selected to read to the two ladies. She impressed them with her reading therefore, they invited her to lunch in a hotel. They gave her strange gifts like preserved ginger and stuffed dates.
"Dust Tracks On A Road" is an autobiography written by Zora Neale Hurston, an American author and anthropologist.