Post-it note with handwritten message in black marker. The message reads: "Share the Love! Free Bouquets!"

Handwritten letter written in black ink on glossy, lined notebook paper. The author, who identifies themself as a Hindu, articulates their belief in the Hindu concept of the soul's eternal nature. They conclude their letter with a Hindu prayer transliterated and translated into English. Fading and spotting due to exposure to the elements at the Wilkins memorial.

Post-it note with abstract illustration in blue and green marker.

Post-it note with handwritten message in green marker. The message reads: "You are not alone. [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 reads: "God be with you!!! We are thinking about you and keeping you in our hearts. [Heart symbol]." The church's contact information is included on the back of the envelope.

Handmade card on white paper. Eleven trees, illustrated in blue ink, appear in the center. The number 11 appears below, followed by a heart. The card reads: "For the 11 people that died. Love, Coleman [last redacted]."

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.

Envelope containing letters written by members of the Point Loma Community Presbyterian Church in San Diego, California. The envelope is labeled with a piece of paper reading: "Letters for Tree of Life Synagogue."

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.

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.

Handwritten note written in blue ink on a piece of notebook paper. Message is difficult to read due to low ink level. Pink staining throughout due to color bleeding from other nearby materials at the Wilkins memorial.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a bird with a leaf in its mouth and floral and geometric motifs. 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 contains messages of prayer, unity, and love. The church's contact information is included on the back of the envelope.

Folded card on blue paper with various taped cutouts. Front cover contains a white heart-shaped cutout. Inside features cutouts in the shape of a house, sun, and blue sky. The sun's rays are illustrated in colored pencil.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Fellow Believer in God, May God bless you and your family."

Floral tag enclosed in orange envelope from floral arrangement sent by Alfred University. The note is written in black ink on a printed tag with orange lillies on the left edge. The reverse is stamped with the contact information of Squirrel Hill Flower Shop.

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Tree of Life, Love always wins. We are with you. Blessings, Dolly and Stan [last name redacted]."

Post-it note with handwritten message in blue ink. The message reads: "We are here."