Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "We feel your loss! We feel your pain! We pray for you and with you!"

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

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, "Stronger Together" sticker, as well as the stock signature: "From your friends at West Allegheny Middle School."

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/04/18 and reads: "We are ONE life, ONE Body, and ONE God. Love and blessings to all."

Folded card with marker and colored pencil illustration. Front and back cover feature spread of tree emerging from blue field. Interior features scribbles and name "Veronica." Additional message reads "Our hearts go out to you at this tragic time, along with our wishes for healing. The Beth Chai Congregation of Greater Washington, D.C."

Single sheet folded in half. Contains photocopy of two pages from the "Readings: Prelude to Kaddish" section of the Kol Haneshamah Shabbat Vehagim prayerbook. One side contains the poem "Each Of Us Has a Name" in English and Hebrew. Other side contains "In Many Houses" by Diane Cole and "To open eyes when others close them" by Emmanuel Eydoux.

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: "You are God's chosen people. He loves you so much and so do we. We pray that love wins in your synagogue every day. God bless, The Church at Severn Run." The church's contact information is included on the back of the envelope.

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

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.

Card with flying dove holding an olive branch in its mouth over a navy blue background with light blue tendrils on the front cover. The word "Peace" appears below the dove. Handwritten note in blue marker from Kelly M. from Freedom, Pa.

Handwritten note in black ink on lined notepad paper. The note reads: "Pop Up Conversation and [F]ree Listening." Extensive tearing and staining throughout due to exposure to the elements at the Wilkins memorial.

Handwritten letter written in black pencil on pink coloring paper folded in half from the Dillon family. The letter inside is addressed to God, referred to as "Heavenly Father." The Dillon family pray for healing, comfort, and unity. The envelope is addressed to Tree of Life, written in blue pencil.

Handwritten note written in brown marker on green coloring paper reading: "Let there be love and light in this world. Our thoughts are with this community. We send our love, light and peace. C. [last name redacted]."

Handmade paper cut out illustrated with pencil and marker in the shape of a clown. The reverse is signed: "Love, Liam."

Post-it note with handwritten message in blue marker. The message reads: "One Love" with peace and heart symbols replacing the letter "o" respectively.

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

Card addressed to Richard Gottfried, written using personal details from various public sources.

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 peace and unity. The church's contact information is included on the back of the envelope.