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

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: "LOVE." The inside reads: "Remembering all of you and sending prayers and healing thoughts from St. Peter's Parish in Londonderry NH. Love, Sandi [heart]."

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 wishes for peace and divine love, and includes a quote from 1 Peter 4:8. The church's contact information is included on the back of the envelope.

Folded card on red paper with handwritten messages in black marker. The front cover is addressed: "To the strong and resilient Jews of Squarrel [Squirrel] Hill," with a heart. The inside contains a message of support and solidarity from an anonymous Jew.

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: "We all pray for you of what happened. We pray the people that are hurt to get better and the people that died to be happy in heaven. Aubry M Holy Angels 4th grade." Color bleeding due to water exposure at the memorial site.

Card made by a student from the George Washington University Hillel. Front cover reads: "We Are One" with an illustrated heart below. The inside reads: "The GW community sends prayers and holds your community in our hearts. We will find a way to come out stronger."

Folded card with colored-pencil illustrations. Front features illustration of tree shedding leaves. Interior features sun shining over water and the name "Sarah."

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 contains messages of condolence and love. The church's contact information is included on the back of the envelope.

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: "May God keep our men and women safe! We are praying 4 u!!!"

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.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover reads: "I am sorry" and features a large heart below. It is signed: "By D'mitri." The inside reads: "Dear survivors of the synagogue shooting, I AM sorry FOR your LOSS. This note is from D'mitri [last name redacted]. I live in Colorado."

Handwritten note on coloring book paper. The front side features the outlines of two horses, colored in with assorted colored pencils. The note reads: "God be with you all. Love Gemma and Giovina [last name redacted]. 4 year olds." The back features the outlines of a leopard perched in a tree with a squirrel.

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 must stick together in times like these because together we are STRONG and no one can take that away from us. Enzo."

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.

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 affirms the sender's belief that we are all God's children. The church's contact information is included on the back of the envelope.

Handwritten card from a student at Goddard Middle School in Littleton, Co. Cover features an illustration of an American flag and Israeli flag flanking a budding plant in the lower center, and a bilingual quote in English and Hebrew attributed to Ghandi in the upper center. In English, the quote reads: "Be the change you want to see in the world." The inside reads: "Dear Rabbi Jeffrey Myers, I am so sorry for your loss. It breaks my hear to hear about acts of Anti-Semitism. I am keeping you and your congregation in my heart and prayers.