Pamphlet for the Christian organization, "Guardians of Freedom."

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 prayers for healing and comfort. The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in green marker. The message reads: "Pittsburgh, I will always love you. My heart goes out to you and is here too. Pittsburgh Strong."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, I offer my deepest sadness and sorrow for the loss that you all have experienced. In no ways can I understand what you're going through as a community, but I want you to know that you're not suffering alone. My heart is breaking for what is breaking yours. May you all know that your Christian brothers and sisters in faith are standing by your side and supporting you with unconditional love. We are all a family, so what hurts one hurts us all.

Post-it note with handwritten message in blue marker. The message reads: "Hate is not welcome here! May love, community, and peace shield you with The Tree of Life." Signed: "[Heart] Temple Beth Shalom, Florida, N.Y."

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."

White envelope with blue border and curlicue designs in the four corners. Handwritten note in black ink on the recto reads: "Tree of Life Congregation." Staining and color fading due to exposure to the elements at the Wilkins memorial. The reverse side features a diamond pattern and has suffered from extensive tearing due to exposure to the elements at the Wilkins memorial.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep Going" surrounded by arrows, stars, and leaves. A handwritten note appears below. The back contains an additional handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Post-it note with handwritten message in green marker. The note is written in Hebrew. Translated into English, it reads: "There is love with us and it will be victorious. May their memories be a blessing." Signed by the Karmiel-Misgav partnership with Pittsburgh.

Photograph showing 11 adults and children standing and sitting on a sidewalk before a house. One person holds a sign reading, "Congregation Dor Hadash Salutes Israel on 25th Anniversary." Other hold Star of David flags.

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. It is signed: "[S]ean [last name redacted] Holy Angels CCD Grade 5." Due to water exposure at the memorial site, the message in this card has been partially erased. The remaining text inside reads: "[D]ear Tree of Life Members, I am very sorry of what happened... that peace is comforting everyone...tragedy in synagogue. P.S. Peace be with you.

Note addressed to Jerry Rabinowitz written on the back of a business card from Doug [last name redacted], a certified Pilates instructor in the Pittsburgh area.

Summary: Timeline arranged by Pittsburgh Post-Gazette listing six mass shootings in the Pittsburgh region since 2000, including incidents in Wilkinsburg, Beaver County, Stanton Heights, Collier, and Mt. Lebanon.

Handwritten note written in blue marker on lined notepad paper from Christian Lacroix reading: "We love you, Cecil. May God comfort you and all the innocent people who died here." A white sticker with a red heart appears below.

Printed tag with a photograph of Bernice Simon. The tag reads: "In Memory of Bernice Simon." Creasing and staining due to exposure to the elements at the Wilkins memorial.

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 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.

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