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.

White and purple envelope with handwritten inscription in blue ink addressed: "To: The family of Tree of Life." The location of the sender's home, Norfolk, Virginia, is inscribed in the lower left corner. The upper flap on the envelope's reverse is inscribed with the following note: "We are so broken hearted for your loss." Staining and creasing due to exposure to the elements at the Wilkins memorial.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/18 and reads: "Tree of Life Community- All of your brothers and sisters at Point Loma Community Presbyterian Church mourn with you. We are absolutely devastated at the events of last week's service, and there are no words one can say to make sense of it. The God of Abraham, Isaac, David, and Jacob is with you, and we pray for comfort, community, city, our country and our world.

Printed card in black ink on white paper. The card contains a large, empty rectangle outlined in black and reads: "I am thankful for people who help me. Nehemiah builds a wall. Nehemiah 1-6."

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. The front reads: "In our hearts" and shows an illustrated heart. The back reads: "Your Jewish family in D.C. is thinking of you and sending so much love your way. Love, GW Hillel."

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 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: "To Tree of Life members and to Jewish everywhere. Adam and Eve let sin in the world, but God gave us another option, Jesus. But through terrorism nothing ever, will drive us apart from being a religious nation. We are one people if they are any differences we should talk them out.

Post-it note with handwritten message in blue marker. The message reads: "When there is dark be the one who turns on the light."

Post-it note with handwritten message in black ink. The message reads: "We love you and we're with you."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, I offer my deepest sadness and sorrow for the loss that you all have experienced. In no ways can I understand what you're going through as a community, but I want you to know that you're not suffering alone. My heart is breaking for what is breaking yours. May you all know that your Christian brothers and sisters in faith are standing by your side and supporting you with unconditional love. We are all a family, so what hurts one hurts us all.

Handwritten "Prayer of St. Francis" written in black ink on white paper, glued to cardboard. Warping due to exposure to the elements at the Wilkins memorial.

Letter from Rev. Drew Shofner, the lead pastor at The Church at Severn Run in Severn, Maryland. Addressed: "TREE OF LIFE."

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.

Floral tag from floral arrangement sent by Eddie and Diane in memory of Al Hess. The note is printed on a tag with a beige background from a local florist.