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

Folded card on light blue paper. The inside features an illustration of a young girl wearing a Star of David t-shirt. The girl is outlined with various scribble scrabble lines in black pen. Smudges of a rainbow appear on upper left side. The front cover features a Star of David outlined in black marker and shaded in purple. Smudging, color bleeding, and staining due to exposure to the elements at the Wilkins memorial.

Note addressed to Dr. Jerry Rabinowitz reading: "I will miss your Hello and smile all my days at Shadyside Hospital. Kelly [sad face]." Written on notecard which was cut in half.

Handwritten card in pink marker on paper. The card contains illustrations of a flower and two hearts and reads: "Simon. May their memory be a blessing." Folded on the sides.

Handwritten card in red marker on paper. The card reads: "We are so sorry. We love you. Owen and Lily." Two stick figures appear below.

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 contains messages of love and support. 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 the words: "Be Strong" and other floral and geometric motifs. Signed "Nikoletta" on the right. The back contains a handwritten note, "Stronger Together" sticker, as well as the stock signature: "From your friends at West Allegheny Middle School."

Folded card on light green paper. Two circular stamped imprints visible in the center of both the right and left flaps. Pink and darker green staining throughout. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Fellow Believer in God, May God bless you and your family."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "May the love and comfort of God, our father, be with you all in this dark hour. We pray for all of you. GOD BLESS You. Margaret [last name redacted]."

Typed letter from a student at Hebrew Academy, a private Jewish day school in Montreal, Quebec. The letter reads: "Dear Rabbi, My name is Joelle. I'm 10 years old. I live in Montreal. I go to Hebrew Academy, a private school. I'm sorry to hear that there was a shooting. I feel so bad. It doesn't matter what religion you are, you have to respect other[s] just the same way you have to respect Hashem (God). We should always know that we are stronger than hate. So bad things can't happen we have to faith and emunah (trust) in Hashem. I feel so bad. From: Joelle. P.S.

Navy blue cotton t-shirt with white and gold screen-printed lettering. Lettering on front reads, "Pitt/Stronger Than Hate" with a Star of David taking the place of the dot above the letter I in "Pitt."

Post-it note with handwritten message in black marker. The message reads: "Love from Cleveland." A Star of David appears below.

Note in black ink on cardboard reading: "I do not have much and I have fallen far from the faith but I stand with you. I pray for you. I love you not because of Religion or faith but because we are All Human. - A Mother."

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "Peace" and features a sandy landscape with a blue sky and orange flowers. The inside reads: "May you find peace in God's love; and be able to go forward and heal in his Glory. Ann [last name redacted] St. Peters Episcopal Church Londonderry, NH."

Printed text of the Hebrew poem "Shalom Aleichem," which is traditionally recited on Friday evenings to welcome the Sabbath angels. Translated into English here. Some of the text in the first line of the final stanza has been cut off. Staining and creasing due to exposure to the elements at the Wilkins memorial.