Handwritten card from a student at Goddard Middle School in Littleton, Co. Front cover features a quote attributed to the fictional Sesame Street character, Cookie Monster: "Sometimes me think, what is friend? And then me say, friend is someone to share the last cookie with." Illustration of a smiling face with a long nose and blond hair appears below. Signed: "Fernando." The inside reads: "Dear Congregation, I am sorry for your losses. We are here for you all the way from Colorado. Sincerely, Fernando Littleton, CO." Spelling errors corrected for clarity.

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: "You are loved by GOD and by ME. [Signature illegible]." The church's contact information is included on the back of the envelope.

Folded card with marker illustration. Cover features Star of David and four hearts. Interior features illustration of tree and messages "We stand with you" and "Beth Chai Congregation stands with you."

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

Laminated prayer card with text of the "Prayer to Our Mother of Perpetual Help" on the reverse. The front side features a reproduction of a medieval-style icon of the Virgin and child against a gold backdrop. This prayer card has the imprimatur of the former archbishop of Boston, William Cardinal O'Connell (1859-1944).

Typed letter from Amy Jonas of the Hebrew Institute of Pittsburgh to Ruth Edenstein, President of Congregation Dor Hadash, thanking Dor Hadash for sponsoring the construction of a ramp on the Hebrew Institute building.

Post-it note with handwritten message in blue marker. The message reads: "God is love. Love beats hate any day." Signed by Cecelia [last name redacted]."

Floral tag from floral arrangement sent by the Manitoba Islamic Association in Canada. The tag reads: "Words cannot begin to express our sorrow at the senseless attack at a house of worship. Please accept our deepest condolences from the Manitoba Islamic Association." The message is printed on a tag from a local florist.

Envelope and floral tag addressed to Jerry Rabinowitz. The envelope reads: "Godspeed Jerry" and is illustrated with two hearts. The tag features an illustration of a sheep with wildflowers growing out of its head. The tag reads: "Jerry, You can rest in peace with Bill. He, too, was an incredibly kind man! Jean. Godspeed."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated 11/4/18 and reads: "To our people of God. Our prayers of love and support are with you always. The loss of your friends and family is horrible. Our prayers for healing are with you all. God promises in Malachi 4 that 'Goodness will shine like the rising sun and will bring healing.' Take heart. With love, Liliana [last name redacted]."

Floral tag from floral arrangement addressed to Jerry sent by Darlene [last name redacted]. The tag reads: "To Jerry, Will always remember your kindness and compassionate bedside manner at SSH [Shadyside Hospital]. Love, Darlene [last name redacted] RN." The note is handwritten in black ink on white paper with a watermark in the lower center.

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark.

Folded card with marker illustrations. Cover reads "Best Wishes." Interior features illustration of smiling sun over water and words "Best Wishes" and name "Harper [last name redacted for privacy]."

Glass vase containing a variety of stone, colored glass, and synthetic red poppy flowers. Included in vase are tags reading, "Dept of NJ American Legion Auxiliary" and "In memoriam."

Folded card on pink paper. A faded Star of David appears on lower right corner. Blue and yellow staining throughout. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Black and white photograph showing large group of people in a banquet hall. Label taped onto photograph reads, "1955."

Page of blank stationery. Blue printing on white paper. Header features illustration of New Light Congregation synagogue. Left-hand margin lists officers of the congregation and contact information for the congregation.

Cover of bencher (grace after meals booklet) from the bar mitzvah of Nate Itskowitz. Features illustration of a black and yellow sports jersey with the name Itskowitz, a Steelers logo modified to read "Nate" and the date "10-27-18," and Hebrew text listing the event and date.

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.