Illinois. "Lensless Slides," a collection of slides by Wojtek Gil, taken with a camera obscura. Polish Museum of America, 984 N. Milwaukee Ave., Chicago, Ill. Regular museum hours. For details visit http://www.PolishMuseumOfAmerica.org .

April 16 through May 16

Illinois. "Post No Bills: Contemporary Polish Posters," an exhibition of posters by students and faculty of the Academy of Fine Arts in Krakow and Katowice. Polish Museum of America, 984 N. Milwaukee Ave., Chicago, Ill. Regular museum hours. For details visit http://www.PolishMuseumOfAmerica.org .

May 23 through June 12

Illinois. Art Exhibition sponsored by the Polish Arts Club of Chicago. Polish Museum of America, 984 N. Milwaukee Ave., Chicago, Ill. Regular museum hours.

Illinois. Śledź (Pre-Lent Polish-style Mardi Gras), sponsored by the Chicago Society, PNA. Dinner, music, dancing, pageant. Cash bar. La Villa Restaurant and Banquets, 3638 N. Pulaski Rd., Chicago, Ill. Reception 6:00 p.m.; dinner 7:00 p.m., followed by music. Tickets $35. For details and reservations call (773) 502-6969 or e-mail markorwat@chicagosocietypna.org .

Ohio. Piano Concert and Scholarship Tea of the Polish Arts Club of Youngstown, celebrating the 200th anniversary of Chopin’s birthday. Butler Institute of American Art, Butler North, Youngstown, Ohio. 1:00-4:00 p.m. Free admission. For details call (330) 646-4082 or visit http://www.polishyoungstown.com .

Washington, D.C. "Human Rights in Post-Communist Transition: Fulfillment or Betrayal," a lecture by Wiktor Osiatynski, Prof. of Law at Central European University. Woodrow Wilson International Center for Scholars, 6th Floor Boardroom, 1300 Pennsylvania Ave. NW, Washington, D.C. 12:00-1:00 p.m.

New York. "The Genius of Frederick Chopin," presented by the Chopin Singing Society. Pvt. Leonard Post, 2450 Walden Ave., Cheektowaga, N.Y. 7:30 p.m. Check locally for details.

New York. Penderecki Quartet in Concert. State University of New York at Buffalo, North Campus, Slee Hall, Amherst, N.Y. 7:30 p.m.

Illinois. Installation Dinner of the Advocates Society of Polish American Lawyers. Award of Merit to Michael R. Zalewski, President Pro Tempore of the Chicago City Council. Hyatt Regency Chicago, 151 E. Wacker Dr., Chicago, Ill. Time to be announced. Tickets $125; students $100; table of 10 $1,000.

Ontario. "Love Thy Savior," North American premiere of a play by Jerzy Lutowski. Toronto Centre for the Arts, 5040 Yonge St., North York, Ont., Canada. Fri. 8:00 p.m.; Sat.-Sun. 2:00 p.m. For details call (416) 872-1111.

Ontario. Opening Concert of the Third Canadian Chopin Piano Competition. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 7:30 pm. Tickets $20 Cdn. For details visit http://www.chopinfestival2010.com .

Ontario. "The Salon Music: Celebrating the Stars of the Future," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 10:00 a.m. Tickets $10 Cdn. For details visit <http://www.chopinfestival2010.com>.

Ontario. "The Salon Music: Nocturne Master Class," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 2:00 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Wisconsin. Megitza Quartet, a concert by musicians of various cultures with evident influence of Polish Highlander traditions. Polish Center of Wisconsin, 6941 S. 68th St., Franklin, Wis. Tickets $15 advance; $17 at door. 7:30 p.m. For details call (414) 529-2140 or visit http://www.polishcenterofwisconsin.org .

Illinois. "Celebrate Poland." Polish entertainment throughout the day. Participation by the Polish Consulate, Polish Scouting Association, Little Stars Children's Theater, Lechici Dancers, Wici Dancers, Lira Ensemble soloists, Pytlik Brothers Polish Folk Band, Storyteller Barbara Kozuchowska, Lucyna Migala, and the Malgorzata Sztwiernia Jazz Band. Food available. Arts and Crafts tables. Information booths. Cash bar. Navy Pier, Crystal Gardens, Chicago, Ill. 12:00-6:00 p.m. Free admission. Pier parking approx. $25. Public transport to Pier available.

Ontario. "Discovering the Dances: Celebrating the Stars of the Future," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 10:00 a.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Ontario. "Discovering the Dances: Lecture and Demonstrations," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 2:00 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Ontario. "Discovering the Dances: Mazurka and Polonaise Master Class," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 3:30 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Illinois. Pulaski Day Celebration. Mayor Richard M. Daley and other officials. Polish Museum of America, 984 N. Milwaukee Ave., Chicago, Ill. 10:00 a.m. Free admission.

Illinois. Pulaski Day Dinner sponsored by the Illinois Division of the Polish American Congress. Prominent public figures and community leaders. Entertainment by Wici, a PNA dance group. White Eagle Banquets, 6839 N. Milwaukee Ave., Niles, Ill. 6:00 p.m. Tickets $45. For details and reservations call (773) 631-3300.

Indiana. Polonia Bus Trip to Chicago, sponsored by the Polonica Pilgrimage Society. Tours of church and Basilica, shopping at Polish delicatessen and lunch. Departure from Nativity of Our Savior Catholic Church, Portage, Ind. at 8:45 a.m. and from All Saints Catholic Church, Hammond., Ind., at 9:15. return at 5:00 p.m. to Hammond and 5:30 p.m. to Portage. Tickets $50. For details and reservations call (219) 947-7037.

Ontario. "Chopin’s 200th Birthday Party, a Canadian Chopin Piano Competition event featuring Krzysztof Jablonski. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 7:00 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Indiana. Polonia Bus Trip to Chicago, sponsored by the Polonica Pilgrimage Society. Tours of church and Basilica, shopping at Polish delicatessen and lunch. Departure from Nativity of Our Savior Catholic Church, Portage, Ind. at 8:45 a.m. and from All Saints Catholic Church, Hammond., Ind., at 9:15. return at 5:00 p.m. to Hammond and 5:30 p.m. to Portage. Tickets $50. For details and reservations call (219) 947-7037.

Ontario. "The Muses Who Inspired the Master, a Canadian Chopin Piano Competition event featuring Dr. Janet Lopinski. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 7:00 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Ontario. "Fryderyk Chopin: The Poet of the Piano," a Canadian Chopin Piano Competition event featuring Dr. Alan Walker. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 7:00 p.m. Tickets $10 Cdn. For details visit http://www.chopinfestival2010.com .

Illinois. "Polkaholics," a film by Wes Hranchak, featuring Li'l Wally and the Polkaholics. Chicago Cultural Center, Cassidy Theater, 78 E. Washington St., Chicago, Ill. 8:00 p.m. Free admission. For details visit http://www.polkaholics.com.

Ontario. "Chopin and Friends: A Parisian Salon recital," a Canadian Chopin Piano Competition event. John Paul II Polish Cultural Centre, 4300 Cawthra Rd., Mississauga, Ont., Canada. 7:30 p.m. Tickets $20 Cdn. For details visit http://www.chopinfestival2010.com .

Washington, D.C. Piano Concert by Dr. Raymond Jackson, internationally celebrated concert pianist, presented by the Polish American Arts Association of Washington, D.C., to benefit its scholarship fund. Embassy of the Republic of Poland, 2640 Sixteenth St. NW, Washington, D.C. 6:00 p.m. Tickets $50. For details call (703) 241-1149.

Ontario. "Gala Winners Concert," a Canadian Chopin Piano Competition event. Royal Conservatory, TELUS Centre, Koerner Hall, 273 Bloor St. West, Toronto, Ont., Canada. 2:00 p.m. For details visit http://www.chopinfestival2010.com .

New York. Wreath Laying Ceremony of the General Pulaski Association. Pulaski Monument, Main and Church Sts., Buffalo, N.Y. For details call (716) 634-6856.

New York. Installation Dinner of the General Pulaski Association with guest Speaker Hon. William Hochul. Protocol Restaurant, 6766 Transit Rd., Williamsville, N.Y. 6:00 p.m. Tickets $37. For details call (716) 685-9641.

Illinois. White and Red Ball (Bal Amarantowy), presented by the Legion of Young Polish Women. Debutante presentation. Music and dancing. Hilton Chicago, Grand Ballroom, 720 S. Michigan Ave., Chicago, Ill. Reception 6:45 p.m.; dinner 8;00 p.m., followed by music. Tickets $175. For details call (847) 647-7710.

Ontario. Czerwone Gitary [Red Guitars] in Concert. Rose Theatre, 1 Theatre Lane, Brampton, Ont., Canada.

Illinois. Song and Dance Concert, sponsored by the Educational Department of the Polish National Alliance (PNA). Ridgewood High School, Auditorium, 7500 W. Montrose Ave., Norridge, Ill. 1:00 p.m. Tickets $15 not sold at door. For details call (773) 286-0500 ext. 387.

New York. St. Patrick-Joseph Dyngus Day Party. Irish Center, 245 Abbott Rd., Buffalo, N.Y. Check locally for details.

Saturday-Sunday, March 27-28 

California. “Halka,” an opera by Moniuszko featuring Polish soprano Patrycja Poluchowicz. Florence Gould Theater at the Palace of the Legion of Honor, 100-34th Ave. at Clement Street, Lincoln Park, San Francisco, Calif. 2:00 p.m. Tickets $20, $31, $34. For details visit http://www.pocketopera.org .

Sunday, March 28 

Illinois. Palm Sunday Luncheon, presented by the Polish Women’s Civic Club. Avalon Banquets, 1905 E. Higgins Rd., Elk Grove Village, Ill. Reception 12:00 p.m.; luncheon 1:00 p.m. Tickets $47; children $16. For details call (847) 382-6339.