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)."

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: "Everyone will stand with you through these tough times. -Flynn."

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: "There can't be light without the dark. We are praying for your safety and peace. Holy Angels CCD." Spelling errors corrected for clarity.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a flower with petals, leaves, and geometric patterns. The back contains a handwritten note, featuring a quote from the British historian, Richard Evans, as well as the stock signature: "From your friends at West Allegheny Middle School."

Cylindrical white ceramic vase containing two bouquets of blue synthetic hydrangeas. Vase is cracked down one side from top.

Post-it note with handwritten message in blue marker. The message reads: "Thank you for being strong."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My thoughts and prayers are with you. Clara [last name redacted]."

Plain white poster board, cut crooked, with two strokes of red marker on the front. Price tag and additional stains on back. Extensive staining due to exposure to the elements at the Wilkins memorial.

Folded card with marker and colored pencil inscriptions. Cover reads: "Do not cry :-) That is sad." Inside reads: "I am very sad about the bad things that happened to you. I hope this never happens again. Luke [last name redacted for privacy]" and features stylized illustration of two stick figures, representing the writer "me" and the recipients "you guys" holding hands.

Post-it note with handwritten message in blue marker. The message reads: "We love you. Love, Sophie."

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

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 message of condolence and a wish for peace, articulated through citations to the Book of Psalms. The church's contact information is included on the back of the envelope.

Clear glass vase containing a variety of blue, purple, and white synthetic flowers. Flowers nestled in wired silver tinsel. Bottom half rusting and discolored from moisture exposure.

Handwritten letter written in black ink on lined notebook paper from a Jewish resident of Riverdale, Ny. Addressed to Congregation Tree of Life, the Squirrel Hill community, Pittsburgh, and everyone grieving from the October 27 attack.

Post-it note with handwritten message in blue marker. The message reads: "No hate. Just love." A heart appears below. Signed: "Columbus, OH."

Card addressed to Rose Mallinger, written using personal details from various public sources.

Post-it note with handwritten message in green marker. The note is written in Hebrew. Translated into English, it reads: "There is love with us and it will be victorious. May their memories be a blessing." Signed by the Karmiel-Misgav partnership with Pittsburgh.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Deliver us from evil! -"