Post-it note with handwritten message in black marker. The message reads: "The neighborhood is with you." A heart appears below.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a mandala with floral motifs. The back contains a handwritten note featuring a quote from the nineteenth century American poet, Emily Dickinson, as well as the stock signature: "From your friends at West Allegheny Middle School."

Post-it note with handwritten message in black ink. The message reads: "We are so sorry! Love and Peace. Your neighbors. Gail and Rich."

Card addressed to Irving Younger, written using personal details from various public sources.

Post-it note with handwritten message in blue marker. The message reads: "Stay strong [underlined]. If we work together hate can't win! [Heart]. [Heart] Pittsburgh [Heart]. - Stella K."

Handwritten card in colored pencil on paper. The card features a large tree resting on grass in the lower center and reads: "We're thinking of you Tree of Life." It is signed: "[Lov]e Shayna and West Orange, NJ."

Card featuring reproduction of a nineteenth century Japanese woodblock print depicting the grounds of the Kameido Tenjin Shrine in Tokyo, Japan. Interior includes handwritten note from two individuals who identify as a Catholic and a baptized Episcopalian, respectively.

Summary: Pittsburgh Post-Gazette Editor David Shribman shares his personal account of learning about the attack and describes the scene in Squirrel Hill.

White posterboard with multiple signatures in colored markers. Illustration of two outstretched arms on the front. The upper half reads: "We lift our hands to God for you." The lower half reads: "St. Michael Catholic Family is praying for you." The reverse features additional signatures and a tree outlined in red in the lower center. Addressed to: "Tree of Life synagogue, Jewish 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.

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.

Small wooden crate containing a bouquet of synthetic flowers resembling sunflowers, roses, and hydrangeas.

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. The inside reads: "Even in dark times there's still hope! I'm praying for you ALL! From Holy Angels CCD." Spelling errors corrected for clarity.

Handwritten card from "Laura" of Monroeville, Pa., expressing solidarity with the Jewish community. Writer identifies as "resident of Monroeville," "Gateway Gator," "breast cancer survivor," and "practicing Catholic."

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.

Rectangular piece of plywood wrapped in metal with embossed design of Hebrew word "Chai," meaning "Life."

Summary: Pittsburgh Tribune-Review report with link to Facebook Live video from a press conference where public officials provide updates about the October 27 attack.

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: "Don't bully people and stand up for people when they are getting bullied."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, Though I feel helpless and unsure of what to do or how to help, this I offer. I stand with you, I mourn with you, I fall on my [?] and cry with you, I get back up with you, I move forward with you. Good and beautiful people of Tree of Life. God bless you, Steve."