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

Printed note on behalf of Jerry Rabinowitz. The note contains photographic illustrations of a bicycle, fanny pack, and whistle. It reads, in blue letters: "Our Friend Jerry."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Don't Stop Believing." The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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.

Piece of notepad paper with a pencil drawing of a flying angel with wings and a halo.

Folded card with handwritten messages on white paper. The front cover reads: "Love," written in colorful bubble letters. The inside reads: "Your brothers and sisters in Aspinwall love you very much."

Post-it note with handwritten message in green marker. The message reads: "Doubt is not the opposite of faith, fear is [underlined] let us not fear."

Post-it note with handwritten message in blue marker. The message reads: "Love and solidarity from the Bay Area."

Folded card on yellow paper with extensive dirt stains. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Card made by a student from the George Washington University Hillel. The card reads: "From our community at GW, you are in our hearts. We pray for better days to come, for mitzvot (good deeds) in honor of those lost, for actions of light to crowd out darkness in Squirrel Hill and beyond."

Miniature New York State flag. Wrapped around stem of flag is a slip of laminated yellow paper reading, "In Memory of our Brother In Memory of our Brother SYLVAN SIMON z''l -- To his family and community we pray Tanuchamo min hashamayim. May God in Heaven comfort you. The Principals, Teachers, Parents, Alumni, and Students of Magen David Yeshivah. Brooklyn, NY." Part of a series of 11 flags, each dedicated to one of the victims. Additional photograph shows the entire set of 11.

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: "There can't be light without the dark. We are praying for your safety and peace. Holy Angels CCD." Spelling errors corrected for clarity.

Pamphlet for the Christian organization, "Guardians of Freedom."

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: "Dear friend, Greetings and peace be with you today. I thank God for the opportunity to write to you this morning. I just wanted to let you know that I am committed to praying for you and serving our communities together. The world is full of broken people. Some of these broken people have caused unimaginable pain. To you my Jewish friends.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My prayer- my prayer is for all the people affected to be at peace. Please Lord look after their friends and family, loved ones in this time of need. In God's name I pray. Amen."

Floral tag from floral arrangement, which reads: "Love will always prevail. Together against hate." The message is written in black ink on a printed tag with multicolored flowers in the lower right corner. Tape in the upper center. The reverse is stamped with the contact information for Squirrel Hill Flower Shop.

Printed tag dedicated to Irving Younger. The tag reads: "Please accept this Random Act of Kindness In honor of Irving Younger. Taken too soon, October 27th, 2018. 1 of our 11 Angels from the Pittsburgh Tree of Life synagogue shooting" followed by a series of hashtags and contact information on Facebook. Tape on the reverse.

Folded card on yellow paper with handwritten message in black marker. The front cover reads: "My thoughts and prayers are with you and the Jewish community through these tough times that you and all Pittsburgh people are going through right now."