Handwritten note written in blue ink on lined paper from Jessica and Aron [last names redacted] from Ridgewood, NJ. Staining due to exposure to the elements at the Wilkins memorial. The back of the note features advertising for Market Central, one of the largest dining halls on the University of Pittsburgh's campus.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "I am here in this moment" as well as arrows and other geometric motifs; a handwritten inscription appears above. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Note written in black and blue ink on bright pink notecard with a quote from Psalm 29:11 and the phrase "Stronger Than Hate." Star of David left center. Green staining on right edge due to exposure to the elements at the Wilkins memorial.

Hardwritten card in blue pen on white paper, offering condolences following the October 27 attack.

Printed tag with a photograph of Daniel Stein. The tag reads: "In Memory of Daniel Stein." Creasing and staining due to exposure to the elements at the Wilkins memorial.

Four-page program with readings and song lyrics. Cover features photograph of a grid of memorial candles and lists names of 14 officiants.

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: "The Tree of Life Members, even though you are going through something tough you will get through it by praying and being with each other. Sincerely, Holy Angels CCD."

Summary: Timeline arranged by Pittsburgh Post-Gazette listing six mass shootings in the Pittsburgh region since 2000, including incidents in Wilkinsburg, Beaver County, Stanton Heights, Collier, and Mt. Lebanon.

Post-it note with handwritten message in black and red marker. The message reads: "If you mess with us. You mess with the entire world." Signed with a heart, colored in red and outlined in black.

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: "Our thoughts and prayers are with you all. God is with you always. God Bless." The church's contact information is included on the back of the envelope.

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover contains the following quote attributed to O.G. Mandino: "Failure will never overtake me if my determination to succeed is strong enough." Illustrated with the image of two stick figures, labeled "strength" and "failure" respectively standing on either side of a wall. The inside reads: "Dear Congregation of the Tree of Life, I am sorry for what happened and I hope everything gets better.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/2018 and reads: "Dear Fellow Journeyers in Faith- May you experience others holding you in their caring arms during this time of loss and grief. Know you are not forgot. Know God can redeem this tragedy to bring about justice. -A friend in San Diego- Claudia."

White poster board with a painting of a tree. Inscriptions with supportive messages and biblical quotes written on multicolored leaves; Star of David painted on trunk. Metallic leaves glued throughout. Addressed to Tree of Life synagogue from St. Patrick's Church in Oakdale, Pa.

Letter written on a piece of notepad paper with a blue line on the right edge. The note reads: "To the loved ones lost, 'Magnified and sanctified be Your name.' Always remembered. The [last name redacted] David, Alyson, Theodore and Andrew."

White posterboard with handwritten message in colored marker. The poster features a quote from 1 Peter 4:8, reading: "Continue to show deep love for each other." The word "love" is embellished with over a dozen hearts. The word, "Trump" has been crossed out on the upper left corner on the reverse.

Handwritten letter in crayon from the [last name redacted] family. Rolled into a scroll and tied with a rainbow called string. The letter features a quote, beginning with the question: "Did I offer peace today," from the Dutch-Catholic priest, Henri Nouwen.

Post-it note with handwritten message in black marker. The message reads: "I was not here, but I live nearby. Had I been home I could have grabbed my baseball bat, and gone after Bowers."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My prayer- my prayer is for all the people affected to be at peace. Please Lord look after their friends and family, loved ones in this time of need. In God's name I pray. Amen."

Handmade card in watercolor and ink on paper. The front side features a hand painted illustration of a braided Challah loaf, traditionally prepared for the Jewish Shabbat. The card is signed: "Love and solidarity from Morgantown, WV." Staining due to exposure to the elements at the Wilkins memorial.