Post-it note with handwritten message in green marker. The message reads, in Hebrew, "Shalom" (Peace). Illustrated with a green heart, flanked by stars, in the lower center.

Post-it note with handwritten message in black marker. The message reads: "Sending love from Detroit, MI." Tape on the upper edge.

Wreath woven from branches, synthetic greenery, and pink and white synthetic flowers.

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.

Summary: Pittsburgh Tribune-Review report on a havdalah vigil held at the intersection of Murray and Forbes avenues on the evening of the October 27 attack.

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.

Floral tag from floral arrangement sent by the Waltons. The tag reads: "Rest in Peace- with love from your old neighbors, The Waltons." The note is handwritten in black ink on a printed tag with blue hydrangeas on the left edge.

Typed text on paper with gray background and blue and gold accents and logos for Holocaust Center of Pittsburgh and the University of Pittsburgh. Text lists speakers and supporters for event.

Summary: Pittsburgh Tribune-Review report with link to Facebook Live video from a press conference where public officials provide updates about the October 27 attack.

Handwritten note written in blue ink on a lined notecard reading: "Sending all of my sympathy, empathy and love. I don't know what else to say. -Hope [last name redacted]. Brooklyn, New York (Former Pittsburgher)."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, 'Blessed are those who mourn for they will be comforted.' Know God's arms are wrapped around your community and the love of all of us are cradling you. Love, Susan [last name redacted], Moderator, Presbytery of San Diego.

Miniature New York State flag. Wrapped around stem of flag is a slip of laminated yellow paper reading, "In Memory of our Brother IRVING YOUNGER 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.

Folded card on red paper with blue and pink stains. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Handmade, screen-printed card on yellow paper with green paint. A heart appears in the center. Signed, lower right: "Love, Khira D." The card has been laminated.

Post-it note with handwritten message in black marker. The message reads: "Love is stronger than hate."

Post-it note with handwritten message in green marker. The message reads: "In this time where hate is prevalent...let's remind each other of how much good there is and teach our children the importance of."

Diamante poem by Jesse [last name redacted], which was sent with the materials from Emergency Ministry Services, a faith-based training and disaster response NGO in San Juan Capistrano, Ca., affiliated with the Orange County Church on the Rock. A diamante poem is a seven-line unrhymed poem which is shaped like a diamond.

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 prayers for healing and comfort. The church's contact information is included on the back of the envelope.

Typed memorial note in honor of Joyce Fienberg. The author recalls personal details about Joyce's research career at the University of Pittsburgh and her caring personality.

Turquoise envelope with handwritten inscription in black ink addressed: "To the Tree of Life." Staining due to exposure to the elements at the Wilkins memorial.