Might be a reference to this:

"November 1, 1999 — Women and men working as special librarians and information professionals are paid the same, according to the 1999 Annual Salary Survey of the Special Libraries Association (SLA, http://www.sla.org). In the U.S., the median full-time salary of female SLA members ($49,550) actually exceeded that of male colleagues ($48,672). In Canada, the median earnings matched ($52,000)."

However,

Read this for the big picture. Women are discriminated against.