Business card from Reverend John Shaver of San Dieguito Methodist Church in Encinitas, Ca.

Note written in black and blue ink on bright pink notecard with a quote from Psalm 29:11 and the phrase "Stronger Than Hate." Star of David left center. Green staining on right edge due to exposure to the elements at the Wilkins memorial.

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 "Irving Younger." 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.

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

Card with a peacock on the front cover. The card reads: "A Catholic who loves all Jewish people! A friend, a neighbor, she loves you."

Handwritten card in green, orange, and red crayon on paper. The card reads, in large bubble letters: "Thinking of you" and illustrated with concentric hearts in red, orange, and green. Signed: "From Meira, West Orange, NJ." Tearing and creasing due to exposure to the elements at the Wilkins memorial.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My heart aches for all of your community of faith who have suffered such a senseless and tragic loss. Please know that we, who have faith and hope in God, know that you are not alone. We are with you. Please accept my heartfelt sympathy. I pray for your peace. Shalom, Sarah."

Handmade card illustrated with multi-colored crayons on light purple paper. The front features a child's illustration of an animal, perhaps a horse, with its mouth open wide in the shape of the letter C. The back features a blob outlined in brown crayon and other undecipherable imagery.

Floral tag from floral arrangement, which reads: "Love will always prevail. Together against hate." The message is written in black ink on a printed tag with multicolored flowers in the lower right corner. Tape in the upper center. The reverse is stamped with the contact information for Squirrel Hill Flower Shop.

Turquoise envelope with handwritten inscription in black ink addressed: "To the Tree of Life." Staining due to exposure to the elements at the Wilkins memorial.

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.

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 inside reads: "We will pray for you. We God guide you through. Love, your friend at Holy Angels Church." Spelling errors corrected for clarity.

Post-it note with handwritten message in black marker. The message reads: "Jersey strong supports #pittsburghstrong. God bless you all!"

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of seven children holding hands around a table with a large goblet and loaf of braided bread, and seven doves. The illustration is labeled: "We are people of God's peace." The inside reads: "We are here and praying in your time of need."

Card with polka dots on the cover. The card is addressed "Neighbors" and affirms the three senders' thoughts and prayers for the "victims, family members, and friends at Tree of Life."

Handwritten letter in crayon from the [last name redacted] family. Rolled into a scroll and tied with a rainbow called string. The letter features a quote, beginning with the question: "Did I offer peace today," from the Dutch-Catholic priest, Henri Nouwen.

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."

White posterboard folded into a card with a white plant stenciled on the front. Stencil done with sponge and multiple colors of paint. Interior includes a handwritten message and signatures to Tree of Life. Back has a message written in pencil and bleed through from markers.

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.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dearest Member of the Tree of Life Synagogue- We are so saddened by the tragic events of the past week. We have so many prayers and concerns for your congregation and your families. We hope that the country will feel your sorrow and hope that people all over the world will bless you. I am part of the prayer quilt ministry that provides quilts for those in need of prayer. We never know who the quilts are intended for as we sew them. But God knows.