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.

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.

Post-it note with handwritten message in blue marker. The message reads: "May their memories be a blessing." Signed in Hebrew: [heart] "Miriam."

Handwritten card in red and green crayon on paper. The card reads: "We love you. Levi" and illustrated with a flower, several hearts, and a mail delivery truck. Color bleeding and creasing due to exposure to the elements at the Wilkins memorial.

Card addressed to David Rosenthal, written using personal details from various public sources.

Card addressed to Richard Gottfried, written using personal details from various public sources.

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."

Triangle-shaped card from a student at Fountain Valley School in Colorado Springs, Co. The card reads: "Dear members of Tree of Life, I am a Chinese [student] who is now studying in U.S. I am sorry about the situation that happened recently. Personally, I support you, do not be afraid! Peace be with you." Star of David in the upper center, peace sign in the bottom center.

Handwritten condolence note written in black marker on yellow paper addressed to the congregants of the Tree of Life synagogue.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends at Tree of Life Synagogue, My heart hurts and aches for the tragedy and violence you have seen. I have thought about it many times as I sit in my own church with family and friends. May God wake with you always, ALL ways, may His breath be in yours, may you heal and grow together from this horrible loss. With much love, Katie [last name redacted] from PLCPC.

Folded card with marker illustration. Front and back cover features illustration of tree with heart superimposed on it. Interior features heart with X in center and words "We're all in this together. Things will get better. You're not alone."

Brown envelope with handwritten note in black ink on a rectangular emblem, reading: "In Memory." Staining and creasing due to exposure to the elements at the Wilkins memorial.

White envelope addressed to Tree of Life Congregation. Handwritten in black ink. Staining due to exposure to the elements at the Wilkins memorial.

Handwritten card in red marker, addressed broadly to tvarious groups impacted by the October 27 attack, including the congregation, the victims and their families, witnesses, police, and first responders. Signed by several families [last names redacted]. The front cover features a reproduction of an eighteenth century engraving of a white heron in the collection of Colonial Williamsburg in Williamsburg, Va.

Black and white photograph of the 1901 confirmation class of Tree of Life Congregation in Pittsburgh. Shows four girls and three boys in formal wear.

Four-page program with readings and song lyrics. Cover features photograph of a grid of memorial candles and lists names of 14 officiants.

Card from the Friendship Circle of Illinois. The front of the card features an illustration of 770 Eastern Parkway in Brooklyn, Ny., the international headquarters of the Chabad-Lubavitch movement. The inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), I'm very sad to hear about the tragic passing of the eleven yidden (Jews) who were so brutally murdered al kiddush Hashem (sanctified by God). I hope there will be no more bad things that happen.

Note from a member of The Church at Severn Run in Severn, Maryland. The note is enclosed in an envelope with church letterhead, reading: "The Church at Severn Run: Love Well, Live Jesus, Believe Big!" The note inside contains messages of condolence, love, and wishes for strength. The church's contact information is included on the back of the envelope.

Floral tag enclosed in orange envelope from floral arrangement sent by Alfred University. The note is written in black ink on a printed tag with orange lillies on the left edge. The reverse is stamped with the contact information of Squirrel Hill Flower Shop.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "You Got This" surrounded by a border with a grapevine pattern. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."