Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4 and reads: "Dear Tree of Life Members, We send our love and sympathy to you. We stand by you and all your global family for life. You are our brothers and sisters cherished our heritage through your and our future promises with you. With prayers and love, Rev. Dr. Larry [last name redacted]."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/18 and reads: "Tree of Life Community- All of your brothers and sisters at Point Loma Community Presbyterian Church mourn with you. We are absolutely devastated at the events of last week's service, and there are no words one can say to make sense of it. The God of Abraham, Isaac, David, and Jacob is with you, and we pray for comfort, community, city, our country and our world.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Be Strong" and other floral and geometric motifs. 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: "Happy Thoughts" surrounded by flowers. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School" on a sticker.

Post-it note with handwritten message in black and red marker. The message reads: "God bless all people of Pittsburgh. Our hearts are with you. [Heart]."

Single page program, printed front and back. Front includes decorative blue waves with image of dove and the word "peace" below. Program lists order of speakers and includes the names of the victims. Back contains the lyrics to "A Song for Healing" by Gwendolyn A. Mitchell.

White cardboard sign with handwritten message in black ink reading: "Hate and Violence are NOT the Answer." Staining and warping due to exposure to the elements at the Wilkins memorial.

Bilingual note written in black ink on lined notebook paper. The message reads in both Hebrew and English: "You are Loved. You are not forgotten." Signed with a Star of David.

Cardstock program with typed text on front and back. Creased down the middle. Program includes itinerary, directions for a vigil walk and a wreath laying ceremony, and Hebrew and English lyrics for two Jewish songs: "Olam Hesed Yibaneh" and "Oseh Shalom Bimromav."

Post-it note with handwritten message in blue marker. The message reads, in Hebrew: "Shalom" (Peace). Signed with a heart.

Post-it note with hand drawn, abstract illustration in blue marker.

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.

Note addressed to the victims and neighbors of the October 27 attack.

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

Butterfly-shaped cutout with colored with blue and green pencil. The words: "#Stronger Than Hate" appear handwritten in alternating blue and green letters above the butterfly's antennae.

Folded card with colored pencil illustration. Front shows a tree in autumn with grass and falling leaves. Inside reads: "Nobody deserves to go through what you are going through. Best wishes to all. Love [heart] Beth Chai."

Post-it note with handwritten message in green marker. The message reads: "Love Wins [heart]."

Card from three students [last names redacted] at Magen David Yeshivah High School in Brooklyn, Ny. Front cover features a red heart in the center with lines connecting to Stars of David on either side. The inside message has faded away due to water exposure at the Wilkins memorial. The back flap contains a message of sympathy and condolence. The card ends: "GET WELL SOON! [heart]."

Card and envelope featuring hand-drawn image of dove. Message in card expounds upon the biblical association of the dove as a symbol of peace.

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.