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.

Post-it note with handwritten message in green marker. The message reads: "Shalom" (Peace). Creasing and tearing due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in blue marker. The message reads, in Hebrew: "Shalom" (Peace). Signed with a heart.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep going" and a pattern with flowers, leaves, arrows, and shooting stars. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Hand painted sign on paper cutout with various motifs, including Stars of David, the Stronger Than Hate Steelers' logo with the Star of David, and a peace symbol. The word, "love" is written in white ink with a streak of blue and white paint.

Card made by a student from the George Washington University Hillel. The front cover reads: "Hugs" with asterisks on either side. The inside (from right to left) reads: "Sending you messages of hope, love, and comfort from Washington D.C. Love, Alex. May God be with you and your families."

Page of typed text. Includes list of speakers, acknowledgement, and a quote from Coretta Scott King.

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 marker. The message reads: "You [underlined] are the beacon of light and hope. Only love can defeat hate. My prayers and love are with you."

Floral tag enclosed in orange envelope from floral arrangement. The tag reads: "Love from your friends in Sewickley." The message is writtein black ink on a printed tag with a forest landscape; the "o" in "Love" is written as a heart. The reverse is stamped with the contact information fo Squirrel Hill Flower Shop.

Floral tag from floral arrangement sent by Daniel Mulhall, the Irish ambassador to the United States, on behalf of the people of Ireland. The note is printed on a tag with a beige background from a local florist.

Flyer with green typed text on green paper. Includes a silhouette graphic of people standing under a tree. Provides information about the location of event and itinerary of activities. Footer includes website and Facebook information for Squirrel Hill Stands Against Gun Violence.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover contains the following quote attributed to the movie star, James Dean: "Dream as you'll live forever, live as you'll die today." A Star of David appears below. Another quote, attributed to the author, August [middle initial and last name redacted] appears on the bottom right: "An empty box in an empty room is hard to fill, but over time it fills slowly..." An open, empty box appears above.

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 black marker. The message reads: "Share the Love! Free Bouquets!"

Post-it note with handwritten message in green marker. The message reads: "You are not alone. [Heart]."

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life members, You have all been in my heart and prayers this past week. It is impossible to imagine what you all must have experienced, but I would hope that your faith and strong community would be very healing at this time. I am so impressed with the response of your congregation- to just keep going, as the Jewish people have done for thousands of years throughout history.