Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "May the love and comfort of God, our father, be with you all in this dark hour. We pray for all of you. GOD BLESS You. Margaret [last name redacted]."

Hand painted sign with white, black, and red paint on cardboard with the word "Hate" crossed out with a red slash inside a red circle.

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."

Orange card addressed to the Tree of Life Community on the front cover. The inside contains a sincere message of sympathy from a Jewish resident of Erie, Pa.

Card from the Friendship Circle of Illinois. The card reads: "Baruch [redacted]. To the Jewish community of Pittsburgh sheyichyu (may they live), I'm so sorry about what happened. I am going to bring and wash my hands in the morning in honor of all those people who passed away." A smiley face with a yarmulke (skullcap) with Hebrew letters appears below. The Hebrew acronym "B"H" (Bless God/Thank God) appears in the upper right. Spelling errors corrected for clarity.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The front cover features a heart with the words "Love and Peace" in the center. The inside reads: "To the Tree of Life Synagogue- May you begin to heal in the days that follow. May you feel love from those around you. You are not alone in your pain. You are not alone in your confusion. We are together with you. Know that love and peace will surround you from now until eternity. Though we may be of different faiths, our love for one another does not change...

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Brothers and Sisters, May God give you strength and courage to overcome this tragedy and bring even more conviction and purpose to the Tree of Life congregation. [First name illegible, last name redacted]."

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. The tag features a quote from Psalm 121:4, which reads: "Indeed, he who watches over Israel will neither slumber no sleep." The message is handwritten in black ink on a printed tag with white and purple flecked flowers.

Printed label which reads: "Thinking of You. Liberty K-5 students." The label is taped to a piece of clear cellophane.

Card from the Friendship Circle of Illinois. The card reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), I will daven for you and give extra tzadakah (charity) and nothing else should happen like what just happened and when moshiach (the Messiah) comes [?] and Hashem will do t'chiyat hameitim (resurrect the dead). The rest of your life should be successful. From so and so... which." The acronym "BS"D" (with the help of heaven), a common header in traditional Jewish letter-writing, appears in the upper left corner.

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 is enclosed in an envelope with church letterhead, reading: "The Church at Severn Run: Love Well, Live Jesus, Believe Big!" The note inside reads: "Just to let you know that you are truly in our thoughts and prayers. You are God's chosen people. He is always with you, and will never leave you. God Bless, Marce." The church's contact information is included on the back of the envelope.

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. Due to water exposure at the memorial site, the message in this card has been partially erased. The remaining text reads: "[?] Us at Holy Angels Church are praying may God be with you. Sin[c]erely, T.O. Holy Angels CCD."

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.

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

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The front cover features a dog. The inside reads: "God loves you and we do, too! Love, NATALIE" and features illustrated stick figures representing the sender, labeled "Me" and "My friend Benji."

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.

Business card from Reverend John Shaver of San Dieguito Methodist Church in Encinitas, Ca.