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

Folded card with colored pencil illustration. Cover shows a tree. Inside reads: "I am so sorry for your loss. We are with you in spirit and in deed. As a former resident of Pittsburgh my heart breaks for you and your community."

Post-it note with handwritten message in green marker. The message reads: "Hate is not welcome anywhere."

Post-it note with handwritten message in green marker. The message reads: "May your memories be forever a blessing and may the Holy One hold in his Heart forever."

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "Dear Blessed Children of God, I am praying for you in these extremely difficult days. Know that you are being held in prayer. You are loved. Praying for Peace, Comfort, and a Hedge of Protection around you and your community. With love, A follower of Christ."

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 letter is dated Oct. 28, 2018 and contains words of condolence and prayer. The church's contact information is included on the back of the envelope.

Typed memorial note in honor of Joyce Fienberg. The author recalls personal details about Joyce's research career at the University of Pittsburgh and her caring personality.

Sympathy card including handwritten note reading, "Hate Can't Destroy a City of Steel/May the Love and Stories of those lost live on forever/You are all loved by your neighbors."

Post-it note with handwritten message in black ink. The message reads: "Z"L."

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 student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a bird feather 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."

Folded card on light green paper. Two circular stamped imprints visible in the center of both the right and left flaps. Pink and darker green staining throughout. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Light blue card with cut corners. A schematic illustration in blue pencil appears on the center-right, a scribble-scrabble line in black pencil on the center-bottom. 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 is dated October 28, 2018 and reads: "Dear Friends, Peace to you. May you live in the love, joy, and kindness of the God of Abraham, Isaac, and Jacob. God is on the throne, always. Harry [last name redacted]." The church's contact information is included on the back of the envelope.

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.

Weight covered in blue metallic cellophane, gathered and tied at top, affixed to a ceramic base. Gold and silver metallic streamers stem from the center. Tile has dirt on bottom.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "God be with each of you."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Synagogue, Being God's chosen often includes incredible sacrifice. Too often you are chosen to be the sacrifice for us all. Thank you and bless you, [name illegible]."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/04/18 and reads: "We are ONE life, ONE Body, and ONE God. Love and blessings to all."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the word: "Smile" and other floral and geometric motifs. The back contains a handwritten note in fuchsia pencil, reading: "I've lost loved ones I care about and know how hard it is. Please know I am thinking about you and I'm sorry for your loss." The stock signature: "From your friends at West Allegheny Middle School" appears on the bottom right.