To mark National Poetry Month and Saturday's CityLit Festival, the Midday show on WYPR will look at the state of the Baltimore literature scene, today from 1 to 2 p.m. Dan Rodricks' guests are Mary Jo Salter, poet and professor in the Writing Seminars program at Johns Hopkins University; Gregg Wilhelm, executive director of the CityLit Project; and Reginald Harris of the Enoch Pratt Library, who has received an individual artist award for poetry from the Maryland State Arts Council. Guests will bring some of their favorite poems, and listeners can send in brief excerpts of their favorite prose or poetry.