Folded card with marker and colored pencil illustration. Cover features Star of David inside heart. Interior features illustrations of heart inside rings, two hands reaching out, and tree with name "Deliliah Lieber."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, 'Blessed are those who mourn for they will be comforted.' Know God's arms are wrapped around your community and the love of all of us are cradling you. Love, Susan [last name redacted], Moderator, Presbytery of San Diego.

Card from the Friendship Circle of Illinois. The front cover shows an upper and lower case "H." The inside features an illustration of two stick figures.

Floral tag from floral arrangement sent by the Waltons. The tag reads: "Rest in Peace- with love from your old neighbors, The Waltons." The note is handwritten in black ink on a printed tag with blue hydrangeas on the left edge.

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is signed Aden, a kindergarten student. It is nearly illegible due to the young age of the sender.

Handout on grief, trauma, and critical incident stress debriefing, which was sent with the materials from Emergency Ministry Services, a faith-based training and disaster response NGO in San Juan Capistrano, Ca., affiliated with the Orange County Church on the Rock.

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 reads: "To my Brothers and Sisters, In spite of the fear, ignorance and hate, may your resolve grow stronger and your love grow bolder. Bless God and God Bless, Brenda." The church's contact information is included on the back of the envelope.

Card with mosaic pattern evoking a flame on the front cover. The inside contains a note of sympathy from the board and staff of Mazon, as well information about the organization

Handwritten note in red ink on white paper glued to black paper tag with gold string. The note reads: "Strong Than Hate. RIP."

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."

Post-it note with abstract illustration in black marker.

Handwritten and illustrated card in colored pencil on scratch paper. The card features an illustrated tree and Menorah and includes various messages, including, "Happy Chanukah" and "Love stronger than hate." It is addressed to the rabbi of the congregation. Signed: "Lucky"[last name redacted] "son of" [name redacted].

Folded card with crayon illustrations. Cover features three human figures. One is standing and smiling. Second is prone and frowning. Third is floating with face obscured. Several balloon-like shapes float toward a colored band along upper margin. Interior reads, "We are here. Right by your side. Keep fighting and good things will come." Back reads "2018" above prone human figure.

Post-it note with handwritten message in green marker. The message reads, in Hebrew, "Shalom" (Peace). Illustrated with a green heart, flanked by stars, in the lower center.

Post-it note with handwritten message in black ink. The message reads: "We are so sorry! Love and Peace. Your neighbors. Gail and Rich."

Post-it note with handwritten message in blue ink. The message reads: "I think about you constantly. Sending love." The Hebrew acronym, "with the help of heaven," appears in the upper right.

Two-sided sheet of printed text. Front contains an open letter to the Jewish community of Pittsburgh from the members of the Vaad Harabonim. Back contains a day-long schedule of classes and programs, as well as the names of the victims of the October 27 attack.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4 and reads: "Dear Tree of Life Members, We send our love and sympathy to you. We stand by you and all your global family for life. You are our brothers and sisters cherished our heritage through your and our future promises with you. With prayers and love, Rev. Dr. Larry [last name redacted]."