Large square card from a student at Fountain Valley School in Colorado Springs, Co. Card reads: "Dear members of Tree of Life[s], I am an international student from China. I heard the sad news about the sad thing [that] happened in the Synagogue. I felt really sorry about that and I know I can't do anything to let you feel better. But I am always on your side. Support the sad family. So please strong to stay together. Peace be with you. - Isabel L." Illustrated Star of David and peace sign on lower left.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Prejudice is the child of ignorance- Sister Corita Kent. We who are enlightened through Christ Jesus stand with you. -Dean [last name redacted]."

White foamcore board with messages written in multiple marker colors. Board framed by strips of red duct tape.

Sepia-tone photograph showing large group of people in a banquet hall decorated with streamers, Stars of David, and American flags. Text at bottom reads "The 25th Anniversary banquet of the Congregation 'Oher Chodosh Anshe Romanian' February 26, 1928 Pittsburgh Pa." Original photograph is creased in several places and missing one corner. 

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

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

Copy of the original charter of Tree of Life Congregation. Four-page typescript document with handwritten annotations. Describes purposes of the congregation and names charter members.

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.

Card with illustrated sunflower. Inscribed in ink with the following message: "Hate cannot break our Steel City." Signed: "equal [=] love [heart] Star of David."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "To Tree of Life Synagogue members, My prayers are with you in Pittsburgh. I know I do not begin to know the pain and grief that is so raw for each of you- but God knows and cares. May you feel the love and concern and care of our church in San Diego. In Him, Rita [last name redacted]."

Bright yellow posterboard with handwritten message written in green marker and pencil reading, "We love you neighbors." Embellished with four hands with additional handwritten messages and hearts.

Folded card with the "Stronger Than Hate" graphic printed in black and white on the front cover. The names of the eleven victims of the October 27 attack are written inside, followed by the following promise: "Rest in peace [heart]. I promise to fight for a world where love prevails hate." An additional message appears on the back: "May we fight to ensure this NEVER happens again. Ahava (love)." It concludes with the names of the eleven victims.

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 solidarity and a prayer for love. The church's contact information is included on the back of the envelope.

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 confirms God's love and urges the reader not to let hate triumph over faith. The church's contact information is included on the back of the envelope.

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.

Poster with handwritten message in black marker reading: "My tears flow for the Tree of Life Congregation. My heart aches for the city I love. I mourn my country whose beacon of love and possibility is being extinguished by the hatred of a few." Illustrated with a red rose bud on the right center. Extensive staining and lifting due to exposure to the elements at the Wilkins memorial; tear in lower right corner.

Handwritten note signed by Ben and Beth of Toronto. Written in black ink on the back of stationary with the logo of Marriott Hotels. Staining 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 a flower with geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."