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 the Waltons. The tag reads: "Rest in Peace- with love from your old neighbors, The Waltons." The note is handwritten in black ink on a printed tag with blue hydrangeas on the left edge.

Condolence card from First Baptist Church, Berkley in Norfolk, Va. Light blue cover with floral pattern inscribed with the stock message: "Thinking of you with extra special care during this time when memories are stirred and the greatness of your loss can't help but felt afresh." Personalized message on the left flap reads: "We are deeply saddened by your loss. Our prayer is that you will feel the peace and comfort of the Lord in this time of need. May your hearts be lifted and unity forever flow.

Printed pamphlet in blue, white, and black ink on blue and white paper. The front cover reads, in English and Hebrew: "Messiah Revealed." The inner panels contain ten biblical prooftexts in support of the claim that the Hebrew Bible foretold the coming of the messiah, "Yeshua" (Jesus).

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Tree of Life, I bleed for you and with you. My soul hurts for you. I stand with you in your faith. I pray for healing. Lola. Point Loma Community Presbyterian Church."

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "We send LOVE to you today and always. We are on in the eyes of the Lord. When one hurts, we all hurt. When there is joy for one, there is joy for all. Prayers and blessings to you."

Handwritten note written in black ink on blue paper. The note, which contains dozens of small, illustrated hearts around a large heart in the upper center, reads: "Lots of Love."

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: "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."

Folded card with colored pencil word art. Cover reads: "Have a good day". Interior reads: "Dear all, I'm so sorry to hear what happened there. We as a Beth Chai would like to send our heart to be there together. We believe world will be better. [Last name redacted for privacy] family."

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.

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.

Summary: Timeline arranged by Pittsburgh Post-Gazette listing six mass shootings in the Pittsburgh region since 2000, including incidents in Wilkinsburg, Beaver County, Stanton Heights, Collier, and Mt. Lebanon.

Card made by a student from the George Washington University Hillel. Front cover reads: "We Are One" with an illustrated heart below. The inside reads: "The GW community sends prayers and holds your community in our hearts. We will find a way to come out stronger."

Sticker with Shabbat-related imagery. Two pink Shabbat candles, labeled in Hebrew: "Shabbat Shalom," appear in the center. Two women, covering their hands, as they bless the candles, appear on either side. Doves appear in the lower right and left corners. Signed lower left.

Post-it note with handwritten message in black marker. The message reads: "Share the Love! Free Bouquets!"

Black and white photograph showing three women reading from a scroll. Pews and stained glass windows can be seen in the background.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, I offer my deepest sadness and sorrow for the loss that you all have experienced. In no ways can I understand what you're going through as a community, but I want you to know that you're not suffering alone. My heart is breaking for what is breaking yours. May you all know that your Christian brothers and sisters in faith are standing by your side and supporting you with unconditional love. We are all a family, so what hurts one hurts us all.

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