Meryl Streep in Towering Inferno?

There has been some debate as to whether Meryl Streep had an early role in The Towering Inferno, playing a secretary named Janet.  Meryl Streep’s first recorded screen role was in 1977, and Towering Inferno was filmed in 1974 when Streep was still at college.  The role of Janet remains uncredited so we would be interested to know if anyone has any definitive information on who played this role.

Meryl Streep?