Hand painted sign with white, black, and red paint on cardboard with the word "Hate" crossed out with a red slash inside a red circle.

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, You are in our thoughts and prayers. -Holy Angels CCD."

White posterboard with dozens of hands in red and pink paint. Initialed in multiple colors by creators. The words "Hope and Love," peace signs, and Stars of David are scattered throughout.

Post-it note with handwritten message and illustration in blue marker. The note features an illustration of a winged angel with a sad face in the center and a sun in the upper right corner. The words: "Love > hate [encircled with a slash trough the center]" appear below.

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 illustration of a man labeled "Jesus" and reads: "I'm sorry for your family. God loves you, all day every day. We all are praying for you. And I'm sorry for your loss. We will remember your loss. We all love you. Sincerely, Nate [last name redacted]."

Handwritten note in black marker which reads: "Love is that which enables choice. Love is always stronger than fear. Always choose on the basis of LOVE." Tearing in left upper corner due to exposure to the elements at the Wilkins memorial.

Laminated copy of poem by Sandra Sturtz titled "May You Always Feel Loved." Poem is printed in black ink with two flowers in the upper right and left corners. Photograph of a sunset over a rocky sea shore in the background.

Folded card with colored pencil illustration. Cover shows a whimsical landscape with a flower, smiling sun, and a fruit tree. Inside features a heart and purple circle surrounded by seven floating items, perhaps leaves or butterflies. Back shows a drooping plant with heart shaped leaves.

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]."

Floral tag from floral arrangement sent by a couple from Virginia. Handwritten message in blue ink on a printed tag featuring a white orchid on the lower right.

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."

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

Zine page with bubble letters and information about the emotional value of hugs. Zine page with cartoons illustrating the emotional value of hugs, including a superhero, labeled "Hugs to the Rescue" and a young couple.

Post-it note with handwritten message in black ink. The message reads: "Sending love, support, and solidarity." Color bleeding due to exposure to the elements at the Wilkins memorial.

Black and white sticker with the word "LOVE" in large capital letters.

Handmade card illustrated with multi-colored crayons on light purple paper. The front features a child's illustration of an animal, perhaps a horse, with its mouth open wide in the shape of the letter C. The back features a blob outlined in brown crayon and other undecipherable imagery.

Diamante poem by which was sent with the materials from Emergency Ministry Services, a faith-based training and disaster response NGO in San Juan Capistrano, Ca., affiliated with the Orange County Church on the Rock. A diamante poem is a seven-line unrhymed poem which is shaped like a diamond. The words of this poem washed away due to rainwater.

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."