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.

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, unity, and blessings. The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in green marker. The message reads: "Hate is not welcome anywhere."

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 featuring a quote from the Brazilian author Paulo Coelho, as well as 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.

Floral tag from floral arrangement sent by the Brown family. The tag reads: "Pittsburgh Strong. We grieve with you. There are no words. Thank you for standing for love. Thank you for fulfilling Exodus 22:21." Note handwritten in blue ink on a printed tag featuring a white rose on the left.

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 from a student at Goddard Middle School in Littleton, Co. The front cover features the following quote attributed to the great ancient Roman orator, Cicero: "While there's life, there's hope. -Marcus Tullius Cicero." An illustration of a large Star of David appears below. The quote and illustration are outlined with a repeating pattern of blue and white lines. The inside reads: "Dear L'Simcha Congregation, My name is Olivia [last named redacted]. I live in Littleton, Colorado. I am Jewish.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "God be with each of you."

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.

Wooden pedestal painted white with white Star of David and red heart affixed to front. Handwritten in pencil and black marker on the Star of David is the name "Richard Gottfried." (The name is misspelled as "Richard Guttfried.") Collaged onto the heart are white pieces of paper and a translation of Psalm 34:18: "The Lord is close to the broken hearted and saves those who are crushed in spirit." Accompanying image shows all 11 Stars of David in the series.

Post-it note with handwritten message in blue marker. The message reads: "As a result of this hate, I'm committing to discovering my Jewish identity and am doing micro-kindness."

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: "We are praying you. We don't deserve this [heart symbol]. Nicole [heart symbol]."

Card from the Friendship Circle of Illinois. The front cover reads: "From Eli [last name redacted] Chicago, Il." The inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), We were all so sad when he heard the news. We all hope very soon there will be tichiat hameitim (resurrection of the dead). My hachlata (resolution) is to look in my siddur (prayer book) while I daven (pray)." Spelling errors corrected for clarity.

Blank pink envelope with tape affixed on the reverse. Staining and fading due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in black ink. The message reads: "You are so strong. Thank you for being so strong in the face of evil. Please be more Jewish. We must show our community's great life in the wake of antisemitism. That is the best revenge. Growth. Love. Life."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends at Tree of Life Synagogue, My heart hurts and aches for the tragedy and violence you have seen. I have thought about it many times as I sit in my own church with family and friends. May God wake with you always, ALL ways, may His breath be in yours, may you heal and grow together from this horrible loss. With much love, Katie [last name redacted] from PLCPC.