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.

White foamcore board with messages written in multiple marker colors. Board framed by strips of orange duct tape.

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 so sorry for you this is terrible the synagogue was bad. You're in my prayers!! Sincerely, Emma Pack , Holy Angels, Grade 4." Spelling errors corrected for clarity. Color bleeding due to water exposure at the memorial site.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "May the peace and love of the Lord bless you all. Our hearts and prayers are with you as you try to understand the WHY of this tragic event. In Christ's love, Beverly [last name redacted] Pt. Loma Community Presbyterian Church 11-5-18."

Typed text on paper with gray background and blue and gold accents and logos for Holocaust Center of Pittsburgh and the University of Pittsburgh. Text lists speakers and supporters for event.

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.

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." Signed: "Tommy" lower center. The inside reads: "To the Tree of Life Synagogue member, We the members of the Holy Angels Church are thinking about you everyday and we hope that you are safe." Due to water exposure at the memorial site, the ink on this card has partially lifted.

Post-it note with handwritten message in blue marker. The message reads: "Blessings of love from Israel."

Post-it note with handwritten message in black marker. The message reads: "We wish you peace and love from NY. The Brodys."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/2018 and reads: "To the Tree of Life Synagogue, Our love and support go out to you. Only the Love of God in us can help to overcome such a tragedy and grief. Stay strong, stay united, and know that we at Point Loma Church in San Diego are praying for you and remembering you. With His Love, Geri [last name redacted]."

Hardwritten card in blue pen on white paper, offering condolences following the October 27 attack.

Post-it note with handwritten message in green marker. The message reads: "In this time where hate is prevalent...let's remind each other of how much good there is and teach our children the importance of."

Post-it note with handwritten message and illustration in blue and green marker. The message reads: "Nothing is lost on the breath of G-d." An illustration of a dove holding an olive branch against the backdrop of cresting waves or mountains.

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 are praying for you. May God guide you through. Love, you[r] friend at Holy Angels." Spelling errors corrected for clarity.

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."

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: "The Tree of Life Members, even though you are going through something tough you will get through it by praying and being with each other. Sincerely, Holy Angels CCD."

Floral tag from floral arrangement sent in memory of Al Hess. The note is printed on a tag with a beige background from a local florist.

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

Envelope and floral tag addressed to Jerry Rabinowitz. The envelope reads: "Jerry" and is illustrated with a heart and tree with barren branches. The tag features an illustration of a sheep with wildflowers growing out of its head. The tag contains a personal message to Jerry and features an illustration of a grass field with tree, large heart, and flowers in the lower center.