Post-it note with handwritten message in blue marker. The message reads: "R.I.P. Dr. Rabinowitz."

Letter from Rev. Drew Shofner, the lead pastor at The Church at Severn Run in Severn, Maryland. Addressed: "TREE OF LIFE."

Card from "Julia L." expressing solidarity with the community.

Folded card with handwritten messages on white paper. The front cover reads: "Love," written in colorful bubble letters. The inside reads: "Your brothers and sisters in Aspinwall love you very much."

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

Double-sided letter written in black ink on lined notebook paper addressed to the eleven victims of the October 27 attack. Dated 10/29/19 upper right, front. Extensive staining on the upper center, front, and tearing on the edges, due to exposure elements at the Wilkins memorial. Signed Nicole on the back.

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: "There can't be light without the dark. We are praying for your safety and peace. Holy Angels CCD." Spelling errors corrected for clarity.

Card from the Friendship Circle of Illinois. The card reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), I will daven for you and give extra tzadakah (charity) and nothing else should happen like what just happened and when moshiach (the Messiah) comes [?] and Hashem will do t'chiyat hameitim (resurrect the dead). The rest of your life should be successful. From so and so... which." The acronym "BS"D" (with the help of heaven), a common header in traditional Jewish letter-writing, appears in the upper left corner.

Post-it note with handwritten message in blue marker. The message reads: "May their memories be a blessing." Signed in Hebrew: [heart] "Miriam."

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: "Stay strong, remain faithful, know you're loved. - Scott." The church's contact information is included on the back of the envelope.

Handwritten note written in blue ink on a lined notecard reading: "Sending all of my sympathy, empathy and love. I don't know what else to say. -Hope [last name redacted]. Brooklyn, New York (Former Pittsburgher)."

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 blessings and affirmations of love. The church's contact information is included on the back of the envelope.

Handwritten and illustrated card in colored pencil on scratch paper. The card features an illustrated tree and Menorah and includes various messages, including, "Happy Chanukah" and "Love stronger than hate." It is addressed to the rabbi of the congregation. Signed: "Lucky"[last name redacted] "son of" [name redacted].

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.

Card from the Friendship Circle of Illinois. The front cover of the card reads: "To the Jewish community of Pittsburgh sheyichyu (may they live)." The card reads: "I feel so bad for you from now and there should be no more bad stuff and moshiach (the Messiah) should come right now!" The acronym "B"SD" (with the help of heaven) appears on the upper right corner of the left fold. There are two illustrations of large smiley faces wearing t-shirts with smiley faces and yarmulkes (skullcaps) with the Hebrew word moshiach (the Messiah).

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, 'Blessed are those who mourn for they will be comforted.' Know God's arms are wrapped around your community and the love of all of us are cradling you. Love, Susan [last name redacted], Moderator, Presbytery of San Diego.

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.