Beverly Young is listed here, and so is Ray Brooks. Both in the Southside High School Class of 1979.
http://www.classmates.com/reunions/school/southside-high-school/17590
https://www.classfinders.com/directory/al/southside/
Ray Lasseter Brooks is listed in his father’s obit. His father was once the quarterback of the Southside High football team. Ray now lives in Birmingham and his birthdate is Sep 2, 1961 (just a few months older than Beverly Nelson).
http://www.legacy.com/obituaries/gadsdentimes/obituary.aspx?pid=161306466
and in other news...
http://www.gadsdentimes.com/news/20160112/former-southside-teacher-charged-with-having-sex-with-student
beverly went to southside high in 1976 1977 and transferred to gadsden likely september 1977. If the yearbook was signed Christmas 1977 it probably wasn’t by her regular boyfriend who would have likely signed it sooner. If it was by someone she knew before she transferred possible talked to him and he dropped by to sign it after they talked...so Ray Brooks is a possibility imo. would be interesting if someone interviewed him. and of course what was the name of her boyfriend who was going to pick her up from work at 10p.m. what can he remember?
Thanks for finding this !!!