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 red marker. The message reads: "We will love you forever." Creasing due to exposure to the elements at the Wilkins memorial.

Handwritten card in pencil on paper. The front of the card reads: "L'chaim" (to life) in Hebrew. It is illustrated with a Menorah. Color bleeding due to exposure to the elements at the Wilkins memorial.

Preprinted card with handwritten message in black ink. Front of card reads, "You are being loved, prayed over, and held close in caring hearts."

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

Post-it note with handwritten message in blue marker. The message reads: "May your loved ones rest in peace. May your hearts heal and know that we are with you and will defend and love you."

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

Oral history with Josiah Gilliam recorded as part of the Meanings of October 27th oral history project.

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

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a flower with geometric motifs. The back contains a handwritten note, as well as a partial stock signature: "From your friends at West Allegheny Middle School."

Handwritten note in black ink on lined notepad paper. The note reads: "Pop Up Conversation and [F]ree Listening." Extensive tearing and staining throughout due to exposure to the elements at the Wilkins memorial.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Know that our loving God is with you all- always. Our love is with all of you hoping you can get through this before [?] God- God will [?] love your deep faith. Know we are here in Pt. Loma CA. Feeling your pain."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a pineapple with floral and geometric motifs. The back contains a handwritten note, a "Stronger Together" sticker, and 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 reads: "God be with you!!! We are thinking about you and keeping you in our hearts. [Heart symbol]." The church's contact information is included on the back of the envelope.

Envelope and floral tag addressed to Jerry Rabinowitz. The envelope is addressed "Jerry" and features an illustration of a bow and heart. The floral tag contains an illustration of an owl with mushrooms and other fauna growing from its head. The sender, Michele, knew Jerry from Coffee Tree Roasters. Michele recalls how Jerry's sweet smile and bright bow ties made a positive impact on her life. Michele illustrated a second bow tie in the upper right corner of the tag.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Our dear brothers and sisters at Tree of Life, You are not alone! I pray that God, our father, will fill you to overflowing with His peace and love as you mourn the loss of your family. May you find comfort in the knowledge that even in this tragedy God is in control and will bring beauty from the ashes. 'My comfort in my suffering in this: Your promise preserves my life.' Psalm 119:50."

Sepia-tone photograph showing large group of people in a banquet hall decorated with streamers, Stars of David, and American flags. Text at bottom reads "The 25th Anniversary banquet of the Congregation 'Oher Chodosh Anshe Romanian' February 26, 1928 Pittsburgh Pa." Original photograph is creased in several places and missing one corner. 

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover features the following quote: "Let your smile change the world but don't let the world change your smile." The inside reads: "Dear Tree of Life Congregation, I am very sorry for the bad news. I am a social studies student in Goddard Middle School. I know the feeling of losing someone, and it must be a very hard time for you guys. just so you know we'll be there for you guys and you'll always be in our thoughts. Sincerely, Evangeline."