Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Our God is stronger than hate. Our love for you in stronger than hate. We cry with you, stand with you, support you, grieve with you. Our hearts hurt but we know your strength and the strength God gives us to overcome the evil in this world. In love and solidarity, Carole."

Card addressed to Daniel Stein, written using personal details from various public sources.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Deliver us from evil! -"

Card made by a student from the George Washington University Hillel. The card features a Star of David and reads: "Dear Pittsburgh, I miss you terribly. I miss my home now more then ever. I stand with my city and my Jewish community now and forever. I am sending all my love from DC."

Card from the Friendship Circle of Illinois. The front cover reads: "To: The Jewish community of Pittsburgh. From: Zalman [last redacted] Chicago, Il." The inside reads: "I take upon myself to have more kavane (intention; emotional devotion) when I daven (pray). Moshiach (the Messiah) should come now and their should only be simchas (joyous occassions)." The message is accompanied by an illustration of a building with a set of stairs leading to a door with a crenellated roof. Spelling errors corrected for clarity.

White posterboard with handwritten messages and hand drawn illustrations in pencil and marker. Large crease in the center. The upper half reads: "HAFTR stands with you Pittsburgh." The lower half features illustrations of six hands with signatures from HAFTR students.

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, 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 a sticker with the stock signature: "From your friends at West Allegheny Middle School."

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover contains the following quote attributed to O.G. Mandino: "Failure will never overtake me if my determination to succeed is strong enough." Illustrated with the image of two stick figures, labeled "strength" and "failure" respectively standing on either side of a wall. The inside reads: "Dear Congregation of the Tree of Life, I am sorry for what happened and I hope everything gets better.

Typescript document stapled in upper left-hand corner, 10 pages.

Zine page with bubble letters and information about the emotional value of hugs. Zine page with cartoons illustrating the emotional value of hugs, including a superhero, labeled "Hugs to the Rescue" and a young couple.

Post-it note with handwritten message in blue marker. The message reads: "What is the name of the deep breath I would take over and over for all of us? Call it whatever you want, it is happiness, it is another one of the ways to enter fire. -Mary Oliver."

Card made by a student from the George Washington University Hillel. The front reads: "In our hearts" and shows an illustrated heart. The back reads: "Your Jewish family in D.C. is thinking of you and sending so much love your way. Love, GW Hillel."

Card with colored pencil and marker illustration. When opened, front side shows illustrations of two five pointed stars and a stack of hearts, and is inscribed: "Margow. We are sorry for your loss." Back shows a tree with spiral-shaped branches and heart-shaped bow and arrows with a rectangular border with hearts in each corner.

Folded card with colored pencil illustration. Front and back of card feature Stars of David enclosed by hearts. Inside reads: "Thumbs up I feel your pain" and features a stylized thumbs up and a smiley face.

Post-it note with handwritten message in blue marker. The message reads: "We are with you- Love is stronger than Hate."

Post-it note with handwritten message in black marker. The message reads: "Love is stronger than hate." Signed with a heart.

Metal sculpture in the shape of a tree feature two-lobed fan-shaped leaves. Sculpture is attached to a circular base and tied with a gold ribbon.

Post-it note with handwritten message in blue marker. The message reads: "When there is dark be the one who turns on the light."