Card addressed to Jerry Rabinowitz, written using personal details from various public sources.

Post-it note with handwritten message in red marker. The message reads: "Let love rule."

Handmade card illustrated in pink and blue colored pencil featuring assorted hearts in varying shapes and colors. Color bleeding due to exposure to the elements at the Wilkins memorial.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Please know your brothers and sisters in Christ stand with you and offer our sincere condolences. Your roots are embedded in our Christianity. Your roots are strong and your strength will sustain you. In Christ's love, PLCPC San Diego, CA."

Folded card with colored pencil illustration. Cover features illustration of heart. Interior reads "We were shocked and deeply saddened by the tragic events in your community. Please accept this token of friendship and caring from a greater community that is in solidarity with you. Beth Chai members Megan and Sylvan [last name redacted for privacy]." Back cover features illustration of rainbow.

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 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."

Typed Hebrew letter from a student at Hebrew Academy, a private Jewish day school in Montreal, Quebec. Translated into English, the letter reads: "Dear Rabbi from the Tree of Life Congregation, My name is Hannah [last name redacted]. I am a student at Hebrew Academy of Montreal. I am truly sorry about what happened to your holy synagogue. I hope that this will not happen again. I give [?] all your family and loved ones of your synagogue."

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 affirms God's greatness and his love. The church's contact information is included on the back of the envelope.

Floral tag from floral arrangement sent by the Alexander family. The tag reads: "Wishing you all peace" followed by two hearts. Message handwritten in blue ink on a printed tag with a red border and a floral bouquet on the lower left.

Envelope and floral tag addressed to Jerry Rabinowitz. The envelope is addressed "Jerry" and features an illustration of a bow and heart. The floral tag contains an illustration of an owl with mushrooms and other fauna growing from its head. The sender, Michele, knew Jerry from Coffee Tree Roasters. Michele recalls how Jerry's sweet smile and bright bow ties made a positive impact on her life. Michele illustrated a second bow tie in the upper right corner of the tag.

Handwritten letter written in black ink on lined notebook paper from Jennifer of Indiana, Pa.

Card and envelope featuring hand-drawn image of dove. Message in card expounds upon the biblical association of the dove as a symbol of peace.

Floral tag from floral arrangement addressed to Rabbi Hazzan Myers at Tree of Life synagogue. The message is printed on flower tag from a local florist. Significant tears due to exposure to the elements at the Wilkins memorial.

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: "Tree of Life, I'm sorry that your synagogue has lost many lives on Saturday morning. You are all in my prayers. With love, Maeve [last name redacted] 6th Grade."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "I pray for you with all my heart. May God's healing love rain down on you. Love, Mary."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a pineapple with floral and geometric motifs. The back contains a handwritten note with a quote from the nineteenth century American poet Emily Dickinson, as well as the stock signature: "From your friends at West Allegheny Middle School."

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: "Dear Tree of Life Members, We are all praying for you and your losses. Please join in our prayers for the police officers injured. From Holy Angels CCD."