Post-it note with handwritten message in black marker. The message reads: "Love is strongest power exists." A Star of David appears below.

Post-it note with handwritten message in black marker. The message reads: "Rest in Peace. Toronto."

Card from the Friendship Circle of Illinois. Front cover reads: "From: Menachem [last name redacted] To: Jewish Community of Pittsburgh." Inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live). Passed away: 11, Injured: 2 Yidden (Jews) + 2 policemen=4. Illustrated below there is a wagon holding the shooter, who says in a word bubble: "I just wanted to kill Jews." A man with a hat, perhaps a police officer, is seated on the right.

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.

Post-it note with handwritten message in green and red marker. The message reads: "Love is stronger than hate. Rest in peace. Jaime." The "o" in love and the dot in the "i" in Jaime are written with hearts.

Post-it note with handwritten message in black ink. The message reads: "Etz Chaim Hi. It is a tree of life for those who hold fast to it."

Card with ballpoint pen illustration. One side reads "We Are With You" with zigzag decorations in corners. Reverse reads, "Don't worry. You are not by yourself. We will support you!" with illustration of hand reaching out.

Folded card with colored pencil illustration. Front shows a tree, smiley face, and is signed "Beatrice." Inside features assorted illustrations including three balloons, two hearts and a star, and large smiley face. Back shows three balloons.

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:

"I voted" sticker with the "Stronger Than Hate" emblem on an orange background. The sticker includes the logo of the local printing company, Raff Printing, Inc. on the lower right. Dirt and other materials on the adhesive back due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in black marker. The message reads: "On the street where I lived many years ago. I remember it with calm and safety. May this spot once again, one day, be a place of comfort and peace for my Jewish community and all people."

Silver box with metallic polka dot lining used to hold the cards sent by students at West Allegheny Middle School in Imperial, Pa. A handmade card with a tree at the center glued to a green ribbon is tied with a bow in the center. The tree trunk is adorned with a banner, reading: "Please take what you need" and is signed: "West Allegheny Middle School" with a heart.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4, 2018 and reads: "Dear Members of the Tree of Life Synagogue, An attack on your community of faith is an attack on all of us. We stand with you from afar, and renounce the hatred that brought that madman to your door. Our pastor, Karla Shaw, will deliver this letter (and many others) as a sign of our solidarity with your community. This is a tangible sign of our prayers for your community- for peace, for protection, for security, for understanding.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "To all of you at Tree of Life Synagogue, Deepest prayers and love reach out to each of you. May God's light and love bring you healing and strength. We are all one in our bonds of faith and goodness and HOPE! You are loved. Wendy [last name redacted]."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "To our esteemed sisters and brothers I offer sorrow in your losses, comfort to enter into your memories and many blessings for your bright future as a synagogue to overcome. With all my love- Russell [last name redacted]."

Post-it note with handwritten message in blue ink. The message reads: "Full recovery for all injured."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "May GOD grant you ALL the grace and mercy our human family can minister and let your faith be a reflection of GOD's LOVE for all of us."

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 sympathy and prayer. The church's contact information is included on the back of the envelope.