Handwritten card from a student at Goddard Middle School in Littleton, Co. The front and back cover reads: "One of the happiest moments ever is when you find the courage to let go of what you can change." The inside reads: "Dear Tree of Life Congregation, I am so very, very sorry for your loss (losses). I know what it's like to lose someone. I am Camden. I am a student at Goddard Middle School. I am 13. I think that what happened with the shooting was not ok. Just because people have beliefs that are different it doesn't give people the right to do something that.

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "LOVE." The inside reads: "Remembering all of you and sending prayers and healing thoughts from St. Peter's Parish in Londonderry NH. Love, Sandi [heart]."

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover contains the following quote attributed to Hubert H. Humphrey: "The greatest gift of life is friendship and I have received it. Quote is accompanied by Star of David and a heart. Signed: "By Jace S." The inside reads: "Dear Rabbi Jeffrey Myers, I am a student from Colorado and I heard about the news and I am sorry for your loss. Sincerely, Jace [last name redacted], Goddard Middle School." Back reads: "Friends never say goodbye."

Post-it note with handwritten message in green marker. The message reads: "In this time where hate is prevalent...let's remind each other of how much good there is and teach our children the importance of."

Features seven "chants," mostly taken from Hebrew scripture.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, we share deeply in your sorrow. Our prayers continue; please feel the strength and love that we send to each of you. With love and prayers, Cynthia [last name redacted]."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Friends, The loss you feel must be beyond my comprehension. I am so very sorry for your tragedy. My prayer is that God will somehow us this to make his face known. I also pray that you will experience emotional and physical healing. These events have reminded me of the frail nature of our earthly bodies. I am confident that God has prepared a plan for us all where we will be freed from our own flesh and all pain will be gone. Love, Blake."

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 addressed to Rose Mallinger. 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.

Post-it note with handwritten message in red marker. The message reads: "May the survivors and the victims' family have strength fortitude, peace and calm. -Chris F." Tape affixed to the upper edge.

Folded card with the "Stronger Than Hate" graphic printed in black and white on the front cover. The names of the eleven victims of the October 27 attack are written inside, followed by the following promise: "Rest in peace [heart]. I promise to fight for a world where love prevails hate." An additional message appears on the back: "May we fight to ensure this NEVER happens again. Ahava (love)." It concludes with the names of the eleven victims.

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 with illustrated sunflower. Inscribed in ink with the following message: "Hate cannot break our Steel City." Signed: "equal [=] love [heart] Star of David."

Handwritten letter written in black ink on lined notebook paper from Jennifer of Indiana, Pa.

Printed note in black ink on white paper. The note reads, in capital letters: "Your Christian brothers and sisters are praying with you." Tearing and creasing due to exposure to the elements at the Wilkins memorial.