Small wooden crate containing a bouquet of synthetic flowers resembling sunflowers, roses, and hydrangeas.

Glass jar containing nine miniature Israeli and American flags.

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

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Handwritten card in pink and orange marker on pink paper. The card reads: "Sorry for this tragedy. We love! Adeline." A large, striped, inverted triangle appears below the word "Sorry." Small hearts and peace symbols appear throughout.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "We are thinking of you and hope you may find peace during this tough. You and your families are in our thoughts. I know God is thinking of you and will keep you protected in his hands while you go through this. It is not fair and we won't understand why this happens. It is terrible and God doesn't give us more than we can handle but it sure feels that way sometime. Just keep peace in your heart and forgiveness for this senseless act.

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Card with large pink rose on the cover with note from Amanda, Jon, Anne Elisabeth, Daniel, and Jay [last name redacted] inside."

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark. The inside reads: "I am sorry for your loss. From: Holy Angels CCD."

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "We send LOVE to you today and always. We are on in the eyes of the Lord. When one hurts, we all hurt. When there is joy for one, there is joy for all. Prayers and blessings to you."

Hardwritten card in blue pen on white paper, offering condolences following the October 27 attack.

Video of "An Act of Valor" event held at the Heinz History Center, featuring October 27 attack survivors Dan Leger and Tim Matson and Rauh Jewish Archives Director Eric Lidji.

Blank Goddard Middle School postcard. Front reads: "Goddard Middle School Good News!" and features the school's symbol.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, We learned in church today, our Pastor Karla lived in the community where the tragic incident happened last week. We feel even more insight and sorrow for all involved. We want to offer our love, empathy, future blessings and also prayers for every family affected. We grieve for you, we pray for you, we pray for us all to be as one, we love you. Your San Diego friends in Christ from Point Loma Community Presbyterian Church.

Note addressed to Dr. Jerry Rabinowitz reading: "Rest in Peace Dr. Rabinowitz. Sue [last name redacted]. Shalom."

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 is addressed to God, and conveys the writers pain about the October 27 attack. The church's contact information is included on the back of the envelope.

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 a quote from 1 Peter 4:3 about love and a prayer for God's love. The church's contact information is included on the back of the envelope.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/18 and reads: "To the families and friends of Tree of Life Synagogue: Please be comforted by the prayers for your losses- offered up by believers of many faiths. Only God can know why this tragedy occurred, but know that He will hold you in his loving arms to heal you with his abiding love and faithfulness. The prayer quilt is tired with countless prayers as well. Be comforted when you see it.