Observance of National Library Week, April 14-20, is being expanded to a monthlong observance by the Salt Lake County Library System.

Kicking off the April activities will be the fifth annual Jazz at the Library Music Festival, Wednesday and Thursday, April 3 and 4, and Saturday, April 6. The activity features performances the first two nights along with informal discussions and workshops. A daylong series of workshops for jazz enthusiasts is planned for April 6."Fine Foods Day" on April 13 will wrap up Salt Lake County Government Week and kick off National Library Week. Customers may exchange non-perishable food in payment for library fines up to $4 on items that were checked out after Jan. 1, 1991. The food collected during this one-day event will be donated to area food banks.

The Friends of the Library will hold their annual meeting April 16, 7 p.m., at Park Library, 4870 S. 2700 West. The public is invited to learn about this active library interest and service group, vote on Friends officers, discuss plans for the future and enjoy special programs.

"A Night of a Thousand Stars" will be observed April 17, 7 p.m., Whitmore Library, 2197 E. 7000 South. The program is part of national read- aloud effort involving celebrities. KSL TV's Bruce Lindsay and Carole Mikita, KALL Radio's Hans Petersen, Brigham Young University basketball player Steve Schriener and former state Sen. Frances Farley will be the local celebrities who will read from their favorite books. "Love Lines" on April 27, 10 a.m., also at Whitmore Library, will cap the monthlong observance. This is a writing workshop focusing on various kinds of romance novels. A special showing of period costumes is included. Registration is required and can be accomplished by calling 943-4636.