Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Printed floral tags from floral arrangements sent by Shadyside Presbyterian Church.

Folded card on white paper. Extensive pink staining in the center. Traces of yellow and pink writing and hand drawn illustrations visible in the upper center and lower left. Dirt stains throughout. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Post-it note with handwritten message in red marker. The message reads: "May God's Peace and Love grow in Pittsburgh and everywhere!"

Post-it note with handwritten message in blue marker. The message reads: "Thank you, so many people who come to bear witness. You meant a lot to us." Signed with a heart.

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "Peace" and features a sandy landscape with a blue sky and orange flowers. The inside reads: "May you find peace in God's love; and be able to go forward and heal in his Glory. Ann [last name redacted] St. Peters Episcopal Church Londonderry, NH."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "May the love and comfort of God, our father, be with you all in this dark hour. We pray for all of you. GOD BLESS You. Margaret [last name redacted]."

17-page speech, typescript with handwritten annotations. Provides a brief history of Tree of Life Congregation and reflects on the mission and values of the congregation at its centennial.

Page of blank stationery. Blue printing on white paper. Header features illustration of New Light Congregation synagogue. Left-hand margin lists officers of the congregation and contact information for the congregation.

White envelope with a handwritten note in blue ink, reading: "To Our Jewish Friends and Neighbors." Staining, color bleeding, and minor tearing due to exposure to the elements at the Wilkins memorial.

Handwritten card from "Laura" of Monroeville, Pa., expressing solidarity with the Jewish community. Writer identifies as "resident of Monroeville," "Gateway Gator," "breast cancer survivor," and "practicing Catholic."

Card featuring reproduction of a nineteenth century Japanese woodblock print depicting the grounds of the Kameido Tenjin Shrine in Tokyo, Japan. Interior includes handwritten note from two individuals who identify as a Catholic and a baptized Episcopalian, respectively.

Floral tag from floral arrangement sent by a group of six families. The tag commemorates the ten trees that were planted by the National Forest Foundation in memory of the October 27 attack victims. The note is printed on a tag with a beige background from a local florist.

Handmade card in purple, blue, green, and black ink on white paper. Signed by Talia, Jacob, and Jayden. Illustrated with small hearts throughout. Smudging and staining due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in red marker. The note, which is written inside a heart, reads: "We love you guys." Two Stars of David appear on the lower right and center.

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark. The inside reads: "We will pray for you. We God guide you through. Love, your friend at Holy Angels Church." Spelling errors corrected for clarity.

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark. The inside reads: "I am so sorry for what happened to the people whom you love and know." An illustrated crying, sad face appears below.

Folded card with crayon illustration. Cover features brown abstract shape. Interior reads, "From Luke, I feel sorry for you. The bad guy is in jail. I still feel sorry. To synagogue people." Back features illustration of tree under a peace sign.