Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope contains the following handwritten message: "Peace and Comfort." The front cover reads: "LOVE." The inside reads: "Dear Family in God, There are not any adequate words to express the horror of what happened to you in your synagogue. May the love of God and those near and far begin to heal the hurt of your losses. Our heartfelt love and prayers are with you in fellowship. Peace and comfort to you.

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

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.

Post-it note with handwritten message in blue marker. The message reads: "We will love, no matter."

Note from a member of The Church at Severn Run in Severn, Maryland. The front of the note reads: "Heaven is for everyone! God is Love- We love you. 'If any man says he love God, he's a liar if he loves not his brother.' 'Love they neighbor as thyself.' We are all children of the Lord. We are all the same in God's eyes. And they that be wise shall shine as the brightness of the firmament." Illustrations of a smiling heart, five-pointed star, cloud, rainbow, as well as flowers, appear below.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "To the Tree of Life Community, We are praying for you in San Diego and sending you blessings through this difficult time. God is with you and holding your members who passed in His loving hand. May His light fill your hearts during these dark times and remind you of His love even through the things we cannot explain. Bless you, Gresham." An illustration of a tree filled with hearts appears below.

Post-it note with handwritten message in blue marker. The message reads: "Recover well." Signed with a Star of David.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4, 2018 and reads: "Tree of Life, I give thanks daily to Yahweh, Father Abraham, Moses, and Jesus! We are all one with you, bonding with you, suffering with you, and healing with you! God help us all daily to Love, Joy, and Peace! Please let our pastor Karla Shaw know how we can help further! Shalom, Larry A. [last name redacted] Semper Fi America! San Diego, California."

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.

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: "We are your sisters and brothers and we stand with you today and every day. We love you and our prayers are with you." The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in blue marker. The message reads: "One Love" with peace and heart symbols replacing the letter "o" respectively.

Post-it note with handwritten message in blue marker. The message reads: "May their memories be a blessing. Love [heart] From Charlotte, NC." Tape on the upper edge.

Card on light blue paper with the word: "Rooaar" [Roar] in the upper right. An illustration of a bridge with a sun peeking through appears in the center, alongside various other undecipherable illustrations. Extensive tearing due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in black marker. The message reads: "We will make the world a better place in the name of your memory."

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: "Everyone will stand with you through these tough times. -Flynn."

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: "My thoughts are with you. We must erase hate. I love you. B.R." The church's contact information is included on the back of the envelope.

Card from the Friendship Circle of Illinois. The cover reads: "To the Jewish community of Pittsburgh, From: Ari [last name redacted]." The acronym "B"SD" (with the help of heaven) appears in the upper right corner. The left flap on the inside features a large smiley face. The right flap reads: "I feel very bad for you and there should be always good stuff. And there be no bad stuff and Moshiach should come right NOW!!" A smiley face has been inserted inside the letter O.

Post-it note with handwritten message in blue marker. The message reads: "May you all rest in eternal peace. God Bless [heart]."