Unsigned card with handwritten note reading, "So sorry for your loss. Please know that ALL of Pittsburgh is UNITED with you! Much love [two heart symbols]."

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "Faith is the friend that comes along when things just seem to go all wrong." The inside reads: "To the Tree of Life, My thoughts and prayers are with yours. Nancy [last name redacted]."

Wooden pedestal painted white with white Star of David and red heart affixed to front. Handwritten in pencil and black marker on the Star of David is the name "Bernice Simon." Collaged onto the heart are white pieces of paper and a translation of Psalm 34:18: "The Lord is close to the broken hearted and saves those who are crushed in spirit." Accompanying image shows all 11 Stars of David in the series.

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

Handwritten card in pencil on paper. The front of the card reads: "L'chaim" (to life) in Hebrew. It is illustrated with a Menorah. Color bleeding due to exposure to the elements at the Wilkins memorial.

Handwritten note written on paper with the letterhead of the North Side Public Safety Council. The note reads: "Sharing our sincerest sympathies" and is signed by the officers of this council. A map of the various neighborhoods in the North Side and a blue line design below.

Post-it note with handwritten message in blue marker. The message reads: "Together we are stronger. T and L."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a turtle with floral and geometric motifs on its shell, legs, and neck. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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. The sender added four colored rectangles inscribed with the following messages: "Mandy [last name redacted] LOVE everyone" and "Shine Bright with Love." The inside reads: "Wishing you a very peaceful life with people who love and care about your loss. Have a happy holiday(s)! From: Mandy [last name redacted]. To: You."

Card made by a student from the George Washington University Hillel. The front reads: "In our hearts" and shows an illustrated heart. The back reads: "Your Jewish family in D.C. is thinking of you and sending so much love your way. Love, GW Hillel."

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."

Floral tag with peach-colored roses on the left. The tag contains a handwritten note reading: "Love conquers Hate!"

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. It is signed: "[S]ean [last name redacted] Holy Angels CCD Grade 5." Due to water exposure at the memorial site, the message in this card has been partially erased. The remaining text inside reads: "[D]ear Tree of Life Members, I am very sorry of what happened... that peace is comforting everyone...tragedy in synagogue. P.S. Peace be with you.

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

Handmade memorial card in pastel and ink on black paper. The card features a large Star of David, shaded in light and darker blue pastel, with an illuminated candle, in the center. Underneath the star, the card reads: "Never Forget." The names of the eleven October 27 attack victims appear in brown ink in the empty space around the star.

Post-it note with handwritten message in green marker. The message reads: "In this time where hate is prevalent...let's remind each other of how much good there is and teach our children the importance of."

Folded card with marker and colored pencil illustration. Cover features Star of David inside heart. Interior features illustrations of heart inside rings, two hands reaching out, and tree with name "Deliliah Lieber."