Card made by a student from the George Washington University Hillel. Card reads: "Praise the Lord, all you nations, extol Him, all your peoples for great is His love toward us. And the faithfullness of the Lord endures forever. Praise the Lord." This message is an English rendering of Psalms 117:1-2.

Card made by a student from the George Washington University Hillel. The front cover contains an illustrated heart. The inside reads: "We stand with you. You are in our thoughts and prayers. With love, Leah and Molly from GW."

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."

Post-it note with handwritten message in black marker. The message reads: "On the street where I lived many years ago. I remember it with calm and safety. May this spot once again, one day, be a place of comfort and peace for my Jewish community and all people."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a heart with floral and geometric motifs. A handwritten note and signature appear in the upper and lower right corners respectively. The back features the stock signature: "From your friends at West Allegheny Middle School."

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

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep Going" surrounded by stars, arrows, and other floral motifs. The back contains a handwritten note, featuring a quote from the British historian, Richard Evans, as well as the stock signature: "From your friends at West Allegheny Middle School."

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

Card addressed to Richard Gottfried. Cover features a reproduction of a painting by Frank Crosby, a resident of the Emmaus Community of Pittsburgh. The inside contains messages of love and support written by other members of the Emmaus Community.

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.

Laminated printed signs in blue and green ink on paper. The signs urge the reader to "Show solidarity" and "stand up for our common values, today tomorrow and always." An illustration of three stylized people raising their hands appears in the upper center, surrounded by the words: "Kindness, Respect, Courage."

Blue card with the words "Stronger Than Hate" in the upper center and the Steelers' logo with a yellow Star of David below. The inside contains a message promising to: "resist hate with love and compassion for others" in memory of those who perished in 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.

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of seven children holding hands around a table with a large goblet and loaf of braided bread, and seven doves. The illustration is labeled: "We are people of God's peace." The inside reads: "Just because life is hard now...does not mean it will be forever challenging. Love in stronger than HATE. You just have to strong. We are praying. -Tree of Life members and all Jewish people. - From: Reena Weber and Holy Angels CCD, 8th grade." Illustrated with two small hearts.

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."

Miniature Israeli flag attached to a flat stick. Stick features logo of the Eagles' Wings organization. Hand-drawn in red on stick is a heart and handwritten note reading, "We Christians love the Jews." Rosary with a Miraculous Medal wrapped around stick.

Hardwritten card in blue pen on white paper, offering condolences following the October 27 attack.

Glass, blue stone and blue handwritten post-it-note. The post-it-note reads: "God help these families and community. 'Hitherto hath the Lord helped us.' (1 Samuel 7:12). Raise an Ebenezer in Pittsburgh. RIP 11 lovely souls." The back reads: "The Ebenezer is the stone of help."