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.

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.

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: "God be with you!!! We are thinking about you and keeping you in our hearts. [Heart symbol]." The church's contact information is included on the back of the envelope.

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

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: "Dear You, I have so much I could tell you, but what I want to share with you is a feeling. I want you to always feel God's love for you! I know sometimes (many times) God's love feels hidden. Where is love's light in our times of darkness? Two things help me to remember God's love each day. I hope that they can help you too.

Large bound volume. Cover features gold writing embossed onto white leather and reads, "Book of Life, New Light Sisterhood, Donated By Mr. and Mrs. Harold Marcus in memory of Herman L. Katz." Interior pages contain handwritten messages in calligraphy.

Folded card on pink paper. Blue and yellow staining throughout, particularly around the central crease. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Condolence card from First Baptist Church, Berkley in Norfolk, Va. Light blue cover with floral pattern inscribed with the stock message: "Thinking of you with extra special care during this time when memories are stirred and the greatness of your loss can't help but felt afresh." Personalized message on the left flap reads: "We are deeply saddened by your loss. Our prayer is that you will feel the peace and comfort of the Lord in this time of need. May your hearts be lifted and unity forever flow.

Post-it note with handwritten message in green marker. The message reads: "Love is all you need!" The "o" is written as a heart.

Handwritten letter written in black pencil on pink coloring paper folded in half from the Dillon family. The letter inside is addressed to God, referred to as "Heavenly Father." The Dillon family pray for healing, comfort, and unity. The envelope is addressed to Tree of Life, written in blue pencil.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Ellis [last name redacted] We pray that you will feel better. 2nd Grade. 7 years." The note is accompanied by illustrations of flower pots, stars, a heart, a smiley face, and a stick figure walking in grass with a sun in the background.

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: "Peace" and features a sandy landscape with a blue sky and orange flowers. The inside reads: "I pray you will find love and peace in the everyday actions of people who care for you. We send so much love to you from Londonderry, New Hampshire and beyond. Love and peace, Erin [last name redacted]."

Folded card on light blue paper. The inside features an illustration of a young girl wearing a Star of David t-shirt. The girl is outlined with various scribble scrabble lines in black pen. Smudges of a rainbow appear on upper left side. The front cover features a Star of David outlined in black marker and shaded in purple. Smudging, color bleeding, and staining due to exposure to the elements at the Wilkins memorial.

Invitation to Leah's Bat Mitzvah celebration on Sunday May 27th at the Tree of Life synagogue. Illustrations of a palm tree and a sun appear on either side of the central text. On the back, the sender wrote: "I had the best day of my life in this shul. We will never forget what happened. We will make the world a better place."

Floral tag from floral arrangement sent by Kathryn, Jim, and James. The tag reads: "With love from Kathryn, Jim, and James. May their memory be a blessing." Note is handwritten in black ink on white paper; staining and creasing due to exposure to the elements at the Wilkins memorial.

Clear glass mason jar containing paper butterflies on sticks, rhinestone star wand, and windchime in the form of an angel with message reading "be at peace."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Our hearts ache and break for and with you. We are with you in this and will remain prayerful as you walk through this incredible loss. With much love, Mary Jo [last name redacted]."

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.