The Old Stone Housewill host the 63rd Pennsylvania Volunteer Infantry reenactment group for Civil War Weekend 2014 on Saturday and Sunday. The free public program will include drills, educational programs, a living history encampment and battle re-enactments. The Old Stone House is at the intersection of Routes 8, 173 and 528 in Brady Township. It will be open for tours during the weekend. Call 724-738-2409.

Harmony Museum, 218 Mercer St., Harmony, is showing seldom-seen artifacts representing a wide range of history in “Out of the Attic” through Sunday. Hours are 1 to 4 p.m. daily. “Out of the Attic” admission is $5 and does not include museum access. Displays are diverse, from 19th century coverlets by Adam Hoerr and Schontz family chairs and memorabilia, to Estey organs manufactured just down the street in the mid-20th century. There also will be business advertising premiums and signs from the past two centuries.

Drake Well Museum, 202 Museum Lane, Titusville, will host Family Day on Saturday, featuring a special admission rate of $20 for up to two adults and three children. Kathy Newson of the Titusville Historical Society will conduct a workshop on “How to Start Your Genealogy,” teaching visitors how to begin researching their family histories. Visitors also can enjoy the museum's 10,000-square-foot petroleum exhibit for answers to the Family Day Scavenger Hunt. Hours are 9 a.m. to 5 p.m. Wednesdays through Saturdays and noon to 5 p.m. Sundays. Call 814-827-2797.

National Aviary, 700 Arch St., hosts Eggstravaganza from 11 a.m. to 3 p.m. Saturday and Sunday and April 18 to 20. Activities are included with admission, which is $13 for adults, $12 for senior citizens, $11 for children ages 2 to 18, and free for children younger than 2. Regular hours are 10 a.m. to 5 p.m. daily. Call 412-323-7235 or visit www.aviary.org.Phipps Conservatory and Botanical Gardens presents the spring flower show through April 20. Phipps will reopen the Butterfly Forest on April 26. Hours are 9:30 a.m. to 5 p.m. daily and until 10 p.m. Fridays. Admission is $15 for adults, $14 for senior citizens and students, and $11 for children ages 2 to 18. Call 412-622-6914 or visit phipps.conservatory.org.Heinz History Center, 1212 Smallman St., is displaying Bill Mazeroski’s 1960 World Series uniform and bronzed bat, on loan from the Tull Family collection, through May 1. Center admission is $15 for adults, $13 for senior citizens, and $6 for students and children ages 6 to 17. Call 412-454-6000 or visit www.heinzhistorycenter.org.ToonSeum, Pittsburgh’s Museum of Cartoon Art at 945 Liberty Ave., opens an exhibit about the children’s series “Little Golden Books” on Friday. “Golden Legacy: Original Art from 65 Years of Golden Books” is the largest collection of original illustration art from the series. The exhibition continues through June 30. Hours are 10:30 a.m. to 3:30 p.m. Mondays, Wednesdays and Thursdays, 10:30 a.m. to 7 p.m. Fridays, 10:30 a.m. to 5 p.m. Saturdays and 11 a.m. to 5 p.m. Sundays; closed Tuesdays. Admission is $6 for those over age 13 and $3 for children ages 6 to 12. Senior citizens, college students, veterans and active military pay $5. Call 412-232-0199 or visit toonseum.org.Children’s Museum, 10 Children’s Way, Allegheny Square, hosts “XOXO: An Exhibit About Love and Forgiveness” through Aug. 31. The museum is open 10 a.m. to 5 p.m. daily. Admission is $13 for adults and $12 for senior citizens and children ages 2 to 18. Call 412-322-5058 or visit www.pittsburghkids.org.Carnegie Museum of Natural History, 4400 Forbes Ave., Oakland, presents “Race: Are We So Different?” through Oct. 27. Hours are 10 a.m. to 5 p.m. Mondays and Wednesdays through Saturdays and noon to 5 p.m. Sundays with extended hours until 8 p.m. Thursdays. Closed Tuesdays. Admission is $17.95 for adults, $14.95 for senior citizens, and $11.95 for students and children ages 3 to 18. Admission after 4 p.m. Thursdays is discounted. Visit www.carnegiemnh.org.