Printed note in light blue ink on white paper. The note reads: "Love and Peace" and is illustrated with peace symbol.

Post-it note with handwritten message in black marker. The message reads: "What happened here will not be forgotten." Signed with a Star of David.

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 a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "You Got This" surrounded by a border with a grapevine pattern. The back contains a handwritten note, as well as 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 Bless You." The church's contact information is included on the back of the envelope.

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.

Printed paper square with the "Stronger Than Hate" emblem. Lamination has started to separate from the paper, as well as color loss, due to exposure to the elements at the Wilkins memorial.

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.

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."

Post-it note with handwritten message in blue ink. The message reads: "Standing with you." Tape marks and color bleeding 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: "Dear Members, We at the Point Loma Community Presbyterian Church in California extend our most heartfelt feeling for you in the time of mourning. It is our wish that your healing take place as soon as possible. We are with you in your loving God. Jay [last name redacted]."

Post-it note with handwritten message in black ink. The message reads: "God's love for the Jews, his people is stronger than the wicked mess of the evil. May the Jews be blessed forever. H. [last name redacted]." Staining and color bleeding due to exposure to the elements at the Wilkins memorial.

Typed letter addressed to Jerry Rabinowitz from Louis D. Louis identifies himself as a gay patient of Rabinowitz during the 1980s. He thanks for Rabinowitz for his sensitivity and care. The letter is enclosed in a plastic page protector and has tape residue on the back from the Wilkins memorial.

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The front cover reads: "Letters." The inside reads: "To Tree of Life family: Who can explain such an event? And how do we move forward? My prayer is that your faith in your God will see you through this grieving time and heal you all with His Grace. Steve [last 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.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "I am so sorry for the loss in your community. I hope you know there are many in our church and community who support you in your loss with our prayers."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration a pineapple with floral and geometric motifs, surrounded by hand drawn hearts. The back contains a handwritten note, "Stronger Together" sticker, 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: "We are strong [underlined] and we will not forget your memory."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated November 4, 2018 and reads: "Dear Friends, May I never understand the anger and the hatred that has been loosed on you in Pittsburgh. May the awful misunderstanding that leads to these feelings in too many others be washed from the face of the Earth. I am ashamed for so many on our planet, whether they murder Jews, Coptics, journalists, or perceived blasphemers. And I am angered by the fomenting of such terror by our leaders and by the silence of our politicians.