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 messages of love and prayer. The church's contact information is included on the back of the envelope.

Glass, blue stone and blue handwritten post-it-note. The post-it-note reads: "God help these families and community. 'Hitherto hath the Lord helped us.' (1 Samuel 7:12). Raise an Ebenezer in Pittsburgh. RIP 11 lovely souls." The back reads: "The Ebenezer is the stone of help."

Post-it note with handwritten message in blue marker. The message reads: "As a result of this hate, I'm committing to discovering my Jewish identity and am doing micro-kindness."

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 messages of solidarity and a prayer for love. The church's contact information is included on the back of the envelope.

Handwritten card in pink and orange marker on pink paper. The card reads: "Sorry for this tragedy. We love! Adeline." A large, striped, inverted triangle appears below the word "Sorry." Small hearts and peace symbols appear throughout.

Hand painted card. The card contains the Stronger Than Hate symbol with a yellow Star of David on the left. The words: "Stronger than Hate" appear in a black text box to the right. A heart appears above.

Paper cut outs in the shape of a tree trunk on brown paper. The first cut out is a smaller tree trunk with branches. The second is larger and features a Star of David illustrated in white and paint and topped with a blue band of paper on the top.

Card with a peacock on the front cover. The card reads: "A Catholic who loves all Jewish people! A friend, a neighbor, she loves you."

Miniature New York State flag. Wrapped around stem of flag is a slip of laminated yellow paper reading, "In Memory of our Sister ROSE MALLINGER z''l -- To his family and community we pray Tanuchamo min hashamayim. May God in Heaven comfort you. The Principals, Teachers, Parents, Alumni, and Students of Magen David Yeshivah. Brooklyn, NY." Part of a series of 11 flags, each dedicated to one of the victims. Additional photograph shows the entire set of 11.

Post-it note with handwritten message in blue and red marker. The message reads: "Hate can't drown out hate. Only love can do that [heart]. By, Brandon."

Black and white laser print with the Stronger Than Hate symbol on the front; Pittsburgh Penguins symbol with Star of David on the back.

Post-it note with handwritten message in blue ink. The message reads: "I will raise my children Jewish #neverforget." Color bleeding due to exposure to the elements at the Wilkins memorial.

Prayer card with the words of a prayer to be recited every day at high noon. The prayer reads: "O God of mercy, give us peace. Peace in our hearts. Peace in our homes. Peace in our community. Peace in the world." Staining due to exposure to the elements at the Wilkins memorial.

Folded card with marker illustration. Front and back cover features illustrations of heart superimposed on tree. Interior features illustration of rising sun and words "a chance for a new day" on one side and "You will get through. It will be okay! Jay [last name redacted for privacy" and a smiling face.

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 messages of support and prayer. The church's contact information is included on the back of the envelope.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Don't Stop Believing." The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Don't Stop Believing." The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Floral tag from floral arrangement sent by John [last name redacted]. The tag reads: "For the innocents who[se] lives were taken- Eternal Love." It is signed John [last name and address redacted] of Phillipsburg, North Carolina. The contact information for James Flower and Gift Shoppe is included below. The message is written in black ink on a printed tag with an ombre background resembling a sunset.

Post-it note with handwritten message in green marker. The message reads: "I miss Bubbie."

Post-it note with handwritten message in green marker. The message reads, in Hebrew, "Shalom" (Peace). Illustrated with a green heart, flanked by stars, in the lower center.