Blank Goddard Middle School postcard. Front reads: "Goddard Middle School Good News!" and features the school's symbol.

Patch featuring logo of Pittsburgh Penguins adapted to resemble a Star of David above the words "Stronger Than Hate."

Floral tag addressed to David Rosenthal. The tag features a white rose on the left and the stock message: "With Deepest Sympathy" in a band on the upper center.

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."

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

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4, 2018 and reads: "Dear Sisters and Brothers, Please hold fast to the promise of God's power and presence in all things. While we have choices He has the final word on how our circumstances, losses, and gains will serve His kingdom. You are loved, prayed for, and supported by many in this trying and confusing time, and always. Please reach out the community of believers for any need. Thank you for your continued faith and courage, which inspires generations.

Page of typed text. Header includes a roadway in the outline of a heart, surrounded by people on bikes. Green border around page. Program lists speakers at event. Footer inlcudes logos for Moms Demand Action, Ceasefire PA, and Squirrel Hill Stands Against Gun Violence and acknowledgement of several donors.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Friends, I offer my deepest sadness and sorrow for the loss that you all have experienced. In no ways can I understand what you're going through as a community, but I want you to know that you're not suffering alone. My heart is breaking for what is breaking yours. May you all know that your Christian brothers and sisters in faith are standing by your side and supporting you with unconditional love. We are all a family, so what hurts one hurts us all.

Eight-page folded cardstock program with dark blue background and typed text. Cover features photograph of a stained-glass Star of David. Contents include order of program, song lyrics with musical notation, Psalm 23 in Hebrew, English and English transliteration, Alden Solovy prayer, test of Kel Maleh Rachamim prayer in Hebrew and English, text of Mourner's Kaddish in Hebrew and English transliteration, and text of Oseh Shalom in Hebrew, English and English transliteration.

Half-page program containing typed text. First page includes a graphic of a tree. Lists speakers for event.

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, love, and wishes for strength. The church's contact information is included on the back of the envelope.

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 words of support and prayers for God's love. The church's contact information is included on the back of the envelope.

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."

Post-it note with handwritten message in black marker. The message reads, in Hebrew and English: "Rest in Peace." Signed by Rabbi Fred Pomerantz.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Deliver us from evil! -"

White envelope with handwritten message in black ink, reading: "In Greatest Sympathy to Residents of Squirrel Hill and Tree of Life Community and Jewish people throughout the world." Staining, creasing, and tearing on the edge due to exposure to the elements at the Wilkins memorial.

Note in black ink on cardboard reading: "I do not have much and I have fallen far from the faith but I stand with you. I pray for you. I love you not because of Religion or faith but because we are All Human. - A Mother."