Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of seven children holding hands around a table with a large goblet and loaf of braided bread, and seven doves. The illustration is labeled: "We are people of God's peace." The inside reads: "Be there for each othe[r]!!! Holy Angels CCD. Love, Brooklyn" and features four illustrated hearts. Spelling errors corrected for clarity.

Envelope and card from administrators and affiliated staff at The Center for Global Understanding and Peacemaking at Elizabethtown College. Envelope is inscribed: "Tree of Life" and illustrated with a Star of David and heart. Card features an illustration of peacock feathers on the front. Card reads: "Elizabethtown College's Center for Global Understanding and Peacemaking shares our concerns and prayers for your community at this most difficult time.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The cover of the card features the following quote: "For every minute you are angry, you lose 60 seconds of happiness." Inside reads: "Dear Rabbi Jeffrey, I am terribly sorry about the antisemitic attack. It infuriates me that someone could do that. Sincerely, Colton [last name redacted]."

Card addressed to Joyce Fienberg, written using personal details from various public sources.

Post-it note with handwritten message in red marker. The message reads: "We are with you." Illustrated with a heart and a Star of David.

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'm sorry for your loss. Jayden."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep Going" surrounded by arrows, stars, and leaves. A handwritten note appears below. The back contains an additional handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Be Strong" and other floral and geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Folded card with marker illustrations. Cover reads "Best Wishes." Interior features illustration of smiling sun over water and words "Best Wishes" and name "Harper [last name redacted for privacy]."

Folded card with marker and colored pencil illustrations. Front and back both feature Stars of David encircled by hearts. Inside shows a tree, labeled "a living tree" signed "from Milo".

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 conveys the sender's horror regarding the October 27 attack and their prayers that God grant peace and comfort. The church's contact information is included on the back of the envelope.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a turtle with floral and geometric motifs on its back, legs, and neck. The back contains a handwritten note and a sticker with blue text reading: "Stronger Together." The stock signature: "From your friends at West Allegheny Middle School" appears in the lower center.

Handwritten note written in blue ink on lined notecard expressing the author's wish that all the victims of the October 27 attack find peace and that God will ease the suffering of those lose who lost loved ones.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, I offer my deepest sadness and sorrow for the loss that you all have experienced. In no ways can I understand what you're going through as a community, but I want you to know that you're not suffering alone. My heart is breaking for what is breaking yours. May you all know that your Christian brothers and sisters in faith are standing by your side and supporting you with unconditional love. We are all a family, so what hurts one hurts us all.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "You are in our thoughts and prayers knowing our Karla was living in your neighborhood has helped us so much-"

Folded card with marker and colored pencil illustration. Front and back cover features Star of David inside heart. Interior features illustrations of heart and tree and word "Please accept our love and thoughts at this terrible time. Beth Chai Congregation, Bethesda, Md."

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.

Wreath of twigs in the shape of a peace sign.