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.

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 affirmation of God's goodness. The church's contact information is included on the back of the envelope.

Handwritten card from a student at Goddard Middle School in Littleton, Co. Front cover features a quote attributed to the fictional Sesame Street character, Cookie Monster: "Sometimes me think, what is friend? And then me say, friend is someone to share the last cookie with." Illustration of a smiling face with a long nose and blond hair appears below. Signed: "Fernando." The inside reads: "Dear Congregation, I am sorry for your losses. We are here for you all the way from Colorado. Sincerely, Fernando Littleton, CO." Spelling errors corrected for clarity.

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.

Post-it note with handwritten message in blue ink. The note features an illustration of a heart with the numbers "412" written inside.

Folded card with marker illustrations. Cover features two balloons with text "It's fine we are here with you." Interior features illustration of abstract diamond designs with text, "I'm saddened by the tragic attack on your community in Pittsburgh - and on all Jews. Please know that you are not alone, and have lots of support from good people near and far. L'shalom."

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: "May you find peace in God's love; and be able to go forward and heal in his Glory. Ann [last name redacted] St. Peters Episcopal Church Londonderry, NH."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "To our Brothers and Sisters at Tree of Life Synagogue, First off, my heart is saddened by the unspeakable tragedy that visited your community last week. My (one) heart breaks with you and we mourn beside you. Second, I feel anger that this could happen. Anger that anyone who have so much fear and brokenness in them that they could commit this kind of act. Finally, and most profoundly, I feel a sense of hope!

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is signed Aden, a kindergarten student. It is nearly illegible due to the young age of the sender.

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 Bham. Handwritten note in black ink on printed tag with various flowers in the upper and lower left corners. The reverse is stamped with the contact information for Squirrel Hill Flower Shop.

Card from "Julia L." expressing solidarity with the community.

Post-it note with handwritten message in blue marker. The message reads, in Hebrew: "May their memories be for a blessing. May their souls be bound with the bond of life. Sharon, Israel."

Floral tag from floral arrangement, which reads: "May the lord Be with you!" The message is written in black ink on a printed tag with white and purple flecked flowers.

Zine page with bubble letters and information about the emotional value of hugs. Zine page with cartoon imagery and information about the value of hugs. A young boy hugs a globe, beneath the inscription: "Embrace the world one hug at a time."

Floral tag enclosed in orange envelope from floral arrangement sent by Alfred University. The note is written in black ink on a printed tag with orange lillies on the left edge. The reverse is stamped with the contact information of Squirrel Hill Flower Shop.

Typescript document stapled in upper left-hand corner, 10 pages.