Handwritten card written in pencil, blue and purple crayon, on paper. The note is from a seven year old child [name is illegible]. The note reads: "We won't forget how you spread kindness so we will do the same to the world. Be kind all around." An illustration of a globe appears below. Spelling errors corrected for clarity. Staining and tearing due to exposure to the elements at the Wilkins memorial.

Post-it note with handwritten message in blue marker. The message reads: "I think this means when there is hate and sorrow be the one who makes happiness and kindness into the world. Simon [last name redacted]."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Friends, Words cannot express our sorrow the losses you all have endured. That your community of faith, love, peace was assaulted with such hatred and brokenness-our hearts ache for you all. We stand with you in faith and love in the face of such destruction. We stand with you in prayers for comfort and healing in the midst of your pain. We stand with you as a force for love in a hurting world. The [last name redacted] Family, Lauren, Joel, Kieran, Micah."

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."

Handwritten card from "Laura" of Monroeville, Pa., expressing solidarity with the Jewish community. Writer identifies as "resident of Monroeville," "Gateway Gator," "breast cancer survivor," and "practicing Catholic."

Post-it note with handwritten message in green marker. The message reads: "Never again! We love you." Tape on the upper edge. Tearing and creasing due to exposure to the elements at the Wilkins memorial.

Printed label which reads: "Thinking of You. Liberty K-5 students." The label is taped to a piece of clear cellophane.

Hand painted card with abstract lines and shapes in brown, green, and blue paint on paper. Signed: "Love, Khira D." lower right. The card has been laminated.

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.

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.

Laminated printed sign which reads: "Peace, Diversity, and Connection" over a photograph of a sunset on a rocky seashore.

Grey and black sticker with the words: "You are beautiful" on the front. The back contains a hashtag and web link to the "You Are Beautiful" company website.

Post-it note with abstract illustration in blue and green marker.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Our God is stronger than hate. Our love for you in stronger than hate. We cry with you, stand with you, support you, grieve with you. Our hearts hurt but we know your strength and the strength God gives us to overcome the evil in this world. In love and solidarity, Carole."

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.

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 wishes for peace and divine love, and includes a quote from 1 Peter 4:8. The church's contact information is included on the back of the envelope.

Card made by a student from the George Washington University Hillel. Card reads: "Praise the Lord, all you nations, extol Him, all your peoples for great is His love toward us. And the faithfullness of the Lord endures forever. Praise the Lord." This message is an English rendering of Psalms 117:1-2.

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: "May your tree keep growing, members of the Tree of Life Synagogue. From: Connor, Grade 7, Holy Angels CCD." The handwritten message is accompanied by an illustrated tree.