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.

Wooden pedestal painted white with white Star of David and red heart affixed to front. Handwritten in pencil and black marker on the Star of David is the name "Melvin Wax." Collaged onto the heart are white pieces of paper and a translation of Psalm 34:18: "The Lord is close to the broken hearted and saves those who are crushed in spirit." Accompanying image shows all 11 Stars of David in the series.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover reads: "I am sorry" and features a large heart below. It is signed: "By D'mitri." The inside reads: "Dear survivors of the synagogue shooting, I AM sorry FOR your LOSS. This note is from D'mitri [last name redacted]. I live in Colorado."

Paper program booklet with image of light blue sky on the cover. Typed text throughout booklet. Contains introductory remarks from Executive Director Dr. Zipora Gur, agenda for conference with summaries describing each presentation, biographies of presenters, descriptions of exhibits associated with the conference, resource lists, acknowledgements, and evaluation form.

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

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.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Tree of Life Synagogue- We in San Diego stand with you and all send all our love. Tom and Linda [last name redacted]."

Card made by a student from the George Washington University Hillel. The front cover contains a bilingual Hebrew and English message: "Haverim (friends) in Pittsburgh" with a Star of David below. The inside (from right to left) reads: "Sending love, solidarity, and hope. Our community is the strongest in the world! -Sam, GWU student, Colorado Springs, CO, Temple Beth Torah."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Brothers and Sisters LOVE conquers all!!!"

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, 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."

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.

Handwritten letter expressing sympathy and messages of goodwill from various lay members of the San Dieguito United Methodist Church in Encinitas, California. Last names redacted for privacy.

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "Peace" and features a sandy landscape with a blue sky and orange flowers. The inside reads: "We are sending you so much love- and will stand with you in peace forever- with you in peace. Steve and Bailey."

Folded card with handwritten messages on white paper. The front cover reads: "Love," written in colorful bubble letters. The inside reads: "Your brothers and sisters in Aspinwall love you very much."

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

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.