I have some information on Cassie Dickerson. Her full name was Cassie Lee Dickerson and she was born Oct 1881 according to the US Census. She did, in fact, marry Raleigh Pendergrass (Dec 10, 1872-Jan 8, 1940) and had the following children:
(Spelling may vary as census data isn't always transcribed 100% correctly)
Susie Pendergrass (1901-Oct 31, 1918)
Solon Pal Pendergrass (July 22, 1902-July 21, 1982)
Monie Pendergrass (Nov 16, 1912-June 20, 1987)
Capers Jack Pendergrass (June 8, 1914-Oct 15, 1993)
Louis Eugene Pendergrass (Feb 24, 1919-?)
Carrie Pendergrass (Circa 1915-?)
Florine Pendergrass Evans (Circa 1909-Feb 23, 1989)
Onnie Pendergrass Moseley (Circa 1912-Aug 13, 1961)
Her parents were Lewis Dickerson (May 1850-?) (I have found a few variations on the spelling of his first name) and Lettie Dickerson (Apr 1850-?) (I do not know her maiden name).
Hope that helps!! If you have any more questions feel free to respond on here.