White poster with handwritten message in black ink reading: "Pittsburgh loves all our neighbors." The hashtag, "Pgh Strong" is written vertically in the lower left corner. Extensive color bleeding due to exposure to the elements at the Wilkins memorial.

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 contains an illustrated tree, labeled "Tree of Life" and reads: "Tree of Life Members, I am really sorry for your loss. I'm praying for you everyday. May all people that have passed away rest in heaven peacefully, and all that are injured good luck to recovery. May all the souls' hearts that have been broken recover and rejoy: Much Love From, Elaina, Holy Angels Church, 6th Grade."

Card from the Friendship Circle of Illinois. The front of the card reads: "To the Jewish community of Pittsburgh sheyichyu (may they live)." The inside reads: "I have [heard] about the terrible news that happened and I feel very very bad for you. I hope moshiach (the Messiah) should come now so we could join with them now!!!" Multiple stars of David and smiley faces are integrated into the text of this card. Spelling errors corrected for clarity.

Oral history of Leslie Aizenman, recorded as part of the Meanings of October 27th Oral History Project.

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.

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.

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: "You are loved and we see you! Never give up because you mean more than can you imagine. Signed, A friend." 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 a bird with a leaf in its mouth and floral and geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card from the Friendship Circle of Illinois. The front of the card features an illustration of 770 Eastern Parkway in Brooklyn, Ny., the international headquarters of the Chabad-Lubavitch movement. The inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), I'm very sad to hear about the tragic passing of the eleven yidden (Jews) who were so brutally murdered al kiddush Hashem (sanctified by God). I hope there will be no more bad things that happen.

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: "Dear Tree of Life Synagogue, We are sorry to hear about this tragedy, and we hope peace is to come. We have been thinking and praying for everyone. Sincerely, Holy Angels. -Rylee. 6th grade." Spelling errors corrected for clarity.

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: "LOVE." The inside reads: "Remembering all of you and sending prayers and healing thoughts from St. Peter's Parish in Londonderry NH. Love, Sandi [heart]."

Wooden pedestal painted white with white Star of David and red heart affixed to front. Handwritten in pencil and black marker on the Star of David is the name "Daniel Stein." Collaged onto the heart are white pieces of paper and a translation of Psalm 34:18: "The Lord is close to the broken hearted and saves those who are crushed in spirit." Accompanying image shows all 11 Stars of David in the series.

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.

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: "Pray for world peace. Praying for all. Love Wins!" The church's contact information is included on the back of the envelope.

Floral tag from floral arrangement addressed to the Mallingers, sent by Andrea. Andrea identifies herself as an old neighbor of the Mallinger family. The note is handwritten in black ink on a white paper.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My prayer- my prayer is for all the people affected to be at peace. Please Lord look after their friends and family, loved ones in this time of need. In God's name I pray. Amen."

Post-it note with abstract illustration in black marker.