A dozen major public television stations received $100.5 million in underwriting commitments for current and future national programs, PBS announced.

The commitments, mostly from corporations and foundations, were led by a five-year, $57 million commitment for "The MacNeil-Lehrer Newshour" by AT&T, Pepsico and the John D. and Catherine T. MacArthur Foundation.j"Public television greatly appreciates the continuing strong support given us by well-respected corporations and foundations across the country," said PBS President Bruce Christensen. "The true beneficiaries of their support will be millions of Americans who will see PBS special programs of lasting value."

In addition, PBS reported December membership drives netted individual pledges totaling a record $18.4 million, a 14.4 percent increase over the same period in 1987.

"Member support is what allows public television stations to provide new and continuing services," said Michael Soper, PBS senior vice president. "On-air efforts to remain the best way to bring new people to the growing family of 5 million Americans who are members of their local stations."