Folded card on green paper. A faded peace sign appears on the front cover flap. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Folded card on red paper. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Folded card on red paper with handwritten messages in black marker. The front cover is addressed: "To the strong and resilient Jews of Squarrel [Squirrel] Hill," with a heart. The inside contains a message of support and solidarity from an anonymous Jew.

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 love and support. The church's contact information is included on the back of the envelope.

Handmade card illustrated in pink and blue colored pencil featuring assorted hearts in varying shapes and colors. Color bleeding due to exposure to the elements at the Wilkins memorial.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Members and Friends of the Tree of Life Synagogue, I am sorry for your loss in the recent shooting. Our prayers are with those affected by the attack and we hope that everyone injured is able to recover. Sincerely, Ben from the Point Loma Community Presbyterian Church in San Diego."

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 reads: "Dear Tree of Life members, I'm sorry for all of the uncalled for events and all of the inconvenience of them. We hope you all feel better and don't worry but keep them in mind. Sincerely, Michaela [last name redacted] from Holy Angels CCD."

Card with colorful illustration of an architectural, urban landscape. Message inside affirms the senders' love, solidarity, and hope, and wishes of kindness.

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 God's greatness and his love. The church's contact information is included on the back of the envelope.

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.

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 love and prayer. 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 reads: "God bless you all and your synagogues in this difficult times and may the spirit of the Lord watch over you. [Signature illegible]."

Collage with a hand drawn tree in the center; leaves comprised of multicolored tissue paper. Handwritten message and signature written in black ink on the lower left.

Post-it note with handwritten message in black marker. The message reads: "We are stronger together!!" Signed: "Arielle."

Post-it note with handwritten message in black ink. The message reads: "We stand with you!" Signed: "Douglas [last name redacted] and family."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/2018 and reads: "To my brothers and sisters at the Tree of Life Synagogue: When I was young in Denver, Colorado our Congregation Church (First Plymouth) and the Temple Micah shared our building. The Rabbi was wonderful and we combined our youth groups and spent weekends and retreats together. It was highlight of my life to learn how common our shared heritage and beliefs were across what had been presented to me as "separateness." So untrue!!

Post-it note with handwritten message in blue marker. The message reads: "May your memory be for a blessing. Sending love and healing from Jews in Berkeley, CA." Signed with a Star of David.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The cover contains the following quote: "The past cannot be changed. The future is yet in your power." An illustration of three stick figures raising their hands, standing on a large rock with a Star of David at the center, before a mountainous landscape with a large sun and clouds, appears on the bottom center. The inside reads: "Dear Rabbi Jeffrey Myers, I'm very sorry about what has happen[ed]. I do know that people are also very sorry.

Business card from Art of Steel, Ltd., a gift store located in Pittsburgh's Strip District neighborhood.