Card addressed to Melvin Wax. Cover features a reproduction of a painting by Frank Crosby, a resident of the Emmaus Community of Pittsburgh. The inside contains messages of love and support written by other members of the Emmaus Community.

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."

Card addressed to David Rosenthal, written using personal details from various public sources.

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.

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.

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.

Double-sided letter. The front features a letter written in blue ink on a white background. The letter is addressed to the families and friends of the October 27 attack victims, the three congregations that gathered to pray at the Tree of Life synagogue, the people of Squirrel Hill, the people of Pittsburgh, as well as all citizens of the world. The addressees are listed in six respective hearts in the upper center. The hearts are surrounded by the branches of two trees which frame either side of the letter.

Pamphlet for the Christian organization, "Guardians of Freedom."

Post-it note with handwritten message and illustration in blue, red, and black ink. The message reads: "Stronger Than Hate" and is accompanied by the adapted Steelers' emblem with blue and red diamonds and a Star of David.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The front cover reads: "Letters." The inside reads: "To Tree of Life family: Who can explain such an event? And how do we move forward? My prayer is that your faith in your God will see you through this grieving time and heal you all with His Grace. Steve [last name redacted]."

Laminated printed tag with the contact information for David [last name redacted], a dentist from the Pittsburgh area.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Breathe" surrounded by a border with floral and geometric motifs. The back contains a handwritten note featuring a quote from Richard Evans, 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."

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 affirms the sender's belief that we are all God's children. The church's contact information is included on the back of the envelope.

Folded card with marker illustration. Cover features illustration of tree with ladder. Interior reads, "We are with you at this sorrowful time. The Beth Chai Congregation of Greater Washington." Back cover reads "I hope you feel better. P.S. We will donate $ to you" with two five-pointed stars.

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

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark. The inside contains an illustrated tree, labeled "Tree of Life" and reads: "Tree of Life Members, I am really sorry for your loss. I'm praying for you everyday. May all people that have passed away rest in heaven peacefully, and all that are injured good luck to recovery. May all the souls' hearts that have been broken recover and rejoy: Much Love From, Elaina, Holy Angels Church, 6th Grade."