DOWNTOWN: The Pittsburgh History & Landmarks Foundation will conduct free self-guided tours of the Old Allegheny County Jail Museum, located at 440 Ross St. A portion of one of the cell blocks was preserved when the former county jail was renovated to house the Family Division of the Allegheny County Common Pleas Court. The tour takes approximately 30 minutes; attendees should arrive no later than 12:30 p.m. For reservations, 412-471-5808 or firstname.lastname@example.org.
NORTH SIDE: The Carnegie Science Center will hold its next Cafe Scientifique, a social and educational program, from 7 to 9 p.m. The speaker will be Matthew Lamanna, assistant curator of the vertebrate paleontology section at the Carnegie Museum of Natural History. He will discuss his first-hand account of discovering Chinese and Antarctic cretaceous birds and the findings’ implications for the rise of modern avians. Admission is free; food and drinks will be available for purchase. For more information, www.CarnegieScienceCenter.org or 412-237-3400.
STRIP DISTRICT: In conjunction with the Pittsburgh Foundation’s Day of Giving, Chatham Baroque will present a 6 p.m. concert at 21 Street Coffee, 2002 Smallman St. Free, though donations are accepted.
DOWNTOWN: Music 101, the lunchtime lecture/performance series presented by the Pittsburgh Symphony Association, will conclude its 2013-14 season with “Concertmaster: The Symphony’s Quarterback” to be held from 12:30 to 1:30 p.m. in the Regency Rooms of Heinz Hall. The speaker will be Noah Bendix-Balgley, concertmaster for the Pittsburgh Symphony Orchestra. Admission is $2, free for students and children. For more information or to order an optional $8 brown bag lunch, call 412-361-3346.
OAKLAND: The 78th annual May Market will be held from 9:30 a.m. to 7 p.m. at Phipps Conservatory and Botanical Gardens. Staff horticulturalists and members of local garden clubs as well as vendors from nurseries, farms and suppliers will be in attendance. Among the items available for sale include organic herbs and vegetables seedlings; tropical plants and succulents; low-maintenance perennials and shrubs; native and rain garden plants. Also available for sale will be organic soil and landscaping materials, botanical art and natural body care products. Phipps staff members and master gardeners will be present to share advice. Attendees will receive a 50 percent discount for admission to the conservatory and get a sneak peek at the summer flower show, which opens Saturday. In addition, hand-dipped fondant strawberries — a tradition — will be served and Cafe Phipps will be open. For more information, www.phipps.conservatory.org.
DOWNTOWN: The Pittsburgh History & Landmarks Foundation will offer a free walking tour of the Penn-Liberty Cultural District. Attendees will meet at noon at Katz Plaza, located at Penn Avenue and Seventh Street. The neighborhood includes restored performance venues, hotels and commercial buildings as well as one-of-a-kind residences and stores within a National Register District and a City Historic District. For reservations, email@example.com or 412-471-5808.
NORTH SIDE: The members of the Association of Amateur Astronomers of Pittsburgh will hold their meeting at 7:30 p.m. at the Carnegie Science Center. The guest speaker will be Tom Field of Field Tested Systems and contributing editor for Sky & Telescope magazine. Mr. Field will give a Web-remote talk, “You Can Almost Touch The Stars.” He will discuss how amateur astronomers can use the latest technology to study the stars, utilizing the art and science of spectroscopy. For more information, www.3ap.org.
OAKLAND: May Market, Phipps Conservatory and Botanical Gardens, 9:30 a.m. to 5 p.m. See Friday’s listing for details.
OAKLAND: “The Library of Congress Chronicling America: The Penn State Newspaper Project” will be the topic for discussion at the next meeting of the Western Pennsylvania Genealogical Society. Karen Morrow, project manager for the Pennsylvania Digital Newspaper Project, and Sue Kellerman, head of the digitization and preservation department for the libraries in the university’s library system. Attendees will learn how and where to find online collections of digitized Pennsylvania newspapers that are freely accessible to anyone, anywhere. In addition, participants will learn how to navigate the basic browse and search features of each collection. The society will meet at 10 a.m. at the main branch of the Carnegie Library of Pittsburgh, located at 4400 Forbes Ave. For more information, www.wpgs.org or 412-687-6811.
SHADYSIDE: The Presbyterian Women of Third Presbyterian Church will hold a rummage sale from 10 a.m. to 2 p.m. at the church, located at 5701 Fifth Ave. at South Negley Avenue. The sale will include clothing for men, women and children, shoes, linens, housewares, furniture, toys, books, small appliances, etc. Proceeds from the rummage sale will benefit EECM Summer Day.
LAWRENCEVILLE: The Lawrenceville Historical Society will host a spring walking tour of the neighborhood’s 10th Ward. The tour will begin at 1 p.m. Stanton Avenue and Butler Street. Local historian and author James Wudarczyk will lead the 90-minute tour that will explore the history of the area’s institutions and its past. Attendees should wear comfortable shoes. No reservations are required. The tour is free and open to the public.
NORTH SIDE: “A Sky Full of Poems” will be the next service in Jazz at Emmanuel, a series of jazz services held at Emmanuel Episcopal Church. The service will take place at 5 p.m. at the church, located at 957 North Ave. For more information, 412-231-0454
To list events happening within the city limits, please fax information to City Calendar, 412-391-8452, or send e-mail to firstname.lastname@example.org, for consideration. Include specific event location, street address, city neighborhood, time, day and cost. Indicate the daytime or evening phone number of the sponsor with all submissions and a phone number readers may call for more information. Or mail information to City Calendar, Pittsburgh Post-Gazette, 34 Blvd. of the Allies, Pittsburgh 15222. The calendar is published Mondays and events appear during the week they occur. Submissions must be received by the Monday preceding publication.