Post-it note with handwritten message in green marker. The message reads: "Never again." The signature is illegible.

Handwritten note on the back of a piece of paper with the letterhead of KYW News Radio. The note is very difficult to read due to extensive creasing and fading caused by exposure to the elements at the Wilkins memorial.

Handwritten note written in black ink on cream colored paper with a rose and rose bud illustrated in the upper left and lower right corners, respectively.

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.

Collage with a hand drawn tree in brown crayon and black ink with a tree hole in the center. Leaves comprised of multicolored tissue paper. Handwritten messages in black ink on either side of the tree.

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

Post-it note with handwritten message in black ink. The message reads: "Sending love, support, and solidarity." Color bleeding due to exposure to the elements at the Wilkins memorial.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Be Strong" and other floral and geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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

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, prayer, and affirmation of God's goodness. The church's contact information is included on the back of the envelope.

Handwritten card in red marker, addressed broadly to tvarious groups impacted by the October 27 attack, including the congregation, the victims and their families, witnesses, police, and first responders. Signed by several families [last names redacted]. The front cover features a reproduction of an eighteenth century engraving of a white heron in the collection of Colonial Williamsburg in Williamsburg, Va.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep going" and a pattern with flowers, leaves, arrows, and shooting stars. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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 reads: "Dear You, I have so much I could tell you, but what I want to share with you is a feeling. I want you to always feel God's love for you! I know sometimes (many times) God's love feels hidden. Where is love's light in our times of darkness? Two things help me to remember God's love each day. I hope that they can help you too.

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "Dear Blessed Children of God, My heart is broken over the recent news of tragedy and the horror and fear that it caused. I pray for peace. I pray for courage and strength to continue to serve our God of love. I pray for healing and again, God's peace. With love, Jackie [last name redacted]."

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, love, and wishes for strength. The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in black marker. The note is written in Hebrew and English. Translated into English, the message reads: "The People of Israel Lives. Love from Toronto, Mark [last name redacted]."

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: "Dear Tree of Life Members, We are all praying for you and your losses. Please join in our prayers for the police officers injured. From Holy Angels CCD."

Post-it note with handwritten message in blue marker. The message reads: "Rest In Peace. In your Happy Place Now."

Card featuring reproduction of a nineteenth century Japanese woodblock print depicting the grounds of the Kameido Tenjin Shrine in Tokyo, Japan. Interior includes handwritten note from two individuals who identify as a Catholic and a baptized Episcopalian, respectively.