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 sender added four colored rectangles inscribed with the following messages: "Mandy [last name redacted] LOVE everyone" and "Shine Bright with Love." The inside reads: "Wishing you a very peaceful life with people who love and care about your loss. Have a happy holiday(s)! From: Mandy [last name redacted]. To: You."

Handwritten card in colored pencil on paper. The card features a large tree resting on grass in the lower center and reads: "We're thinking of you Tree of Life." It is signed: "[Lov]e Shayna and West Orange, NJ."

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: "Tree of Life members, There is a light at the end of the tunnel, you just have to see the light. Margee [last name redacted]."

Yellow card with extensive red staining. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

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 a quote from 1 Peter 4:3 about love and a prayer for God's love. 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 various geometric and floral motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card addressed to Joyce Fienberg. Cover features a reproduction of a painting by Frank Crosby, a resident of the Emmaus Community of Pittsburgh. The inside contains messages of love and support written by other members of the Emmaus Community.

Card from the Friendship Circle of Illinois. Front cover reads: "From: Menachem [last name redacted] To: Jewish Community of Pittsburgh." Inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live). Passed away: 11, Injured: 2 Yidden (Jews) + 2 policemen=4. Illustrated below there is a wagon holding the shooter, who says in a word bubble: "I just wanted to kill Jews." A man with a hat, perhaps a police officer, is seated on the right.

Folded card with crayon illustrations. Cover features three human figures. One is standing and smiling. Second is prone and frowning. Third is floating with face obscured. Several balloon-like shapes float toward a colored band along upper margin. Interior reads, "We are here. Right by your side. Keep fighting and good things will come." Back reads "2018" above prone human figure.

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, as well as the stock signature: "From your friends at West Allegheny Middle School."

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope contains a handwritten message: "With Peace and in Repentance and friendship of Spirit." The front cover reads: "Peace" and features a sandy landscape with a blue sky and orange flowers. The inside reads: "Dear Friends in the God of Abraham, My spirit and my prayers have been with you this past week. Prayers of love, courage, hope, and prayers of repentance for all little ways in which my own way of living accommodates any hatred, bigotry, or antisemitism.

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "Please do not stop your worship. Continue to pray for the people who really need it. Pray for those who need love. I love you so please do not stop worshipping or [be] scared to worship. Don't let the hate change your lifestyle. [Smiley face]."

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: "Dear friend, Greetings and peace be with you today. I thank God for the opportunity to write to you this morning. I just wanted to let you know that I am committed to praying for you and serving our communities together. The world is full of broken people. Some of these broken people have caused unimaginable pain. To you my Jewish friends.

Folded card with pencil illustration. Cover features flower on ground under words "Just remember..." Interior features illustration of heart superimposed on planet Earth with human figures dancing on it and the words, "We Are All Jews Together." Additional note reads, "Please know that Beth Chai Congregation members like us are thinking of you. Karen & Howard [last name redacted for privacy]."

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.

Rectangular card from a student at Fountain Valley School in Colorado Springs, Co. Front reads: "Tree of Life" and features a Star of David and a peace sign. Back reads: "Dear members of Tree of Life: I'm a Chinese high school student who study in U.S. After I heard the news that what happened in Tree of Life at this weekend. I'm extremely shocked and I still cannot believe that. We really against the discrimination between the religions and I believe that hate is no allowed between religions.

Card addressed to Melvin Wax. Cover features a reproduction of a painting by Frank Crosby, a resident of the Emmaus Community of Pittsburgh. The inside contains messages of love and support written by other members of the Emmaus Community.

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 reads: "From Eli [last name redacted] Chicago, Il." The inside reads: "To the Jewish community of Pittsburgh sheyichyu (may they live), We were all so sad when he heard the news. We all hope very soon there will be tichiat hameitim (resurrection of the dead). My hachlata (resolution) is to look in my siddur (prayer book) while I daven (pray)." Spelling errors corrected for clarity.