Post-it note with handwritten message in blue marker. Tape in the upper left corner. The message reads: "This Temple's response to all this hate is beautiful. Hate is not welcome here or anywhere! My blessings to all."

Color photograph showing six children holding a banner that reads, "New Light Congregation." People in the background are wearing matching shirts from the congregation.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Don't Stop Believing." The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Handwritten and illustrated card in colored pencil on scratch paper. The card features an illustrated tree and Menorah and includes various messages, including, "Happy Chanukah" and "Love stronger than hate." It is addressed to the rabbi of the congregation. Signed: "Lucky"[last name redacted] "son of" [name redacted].

Post-it note with handwritten message in blue ink. The message reads: "May their memories be a blessing." Color bleeding due to exposure to the elements at the Wilkins memorial.

Card with abstract images painted and drawn by a young child. The words: "Love on you" appear in large letters inside on the lower left.

Folded card on yellow paper with red and green stains. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Piece of notepad paper with a pencil drawing of a flying angel with wings and a halo.

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

Picket sign made from rigid foam insulation covered in red, white, blue, and green duct tape and affixed to the top of a wooden dowl. Design features a globe inside a red cross, symbolizing medical care, beneath the words "Heal the World" and "Tikkun Olam."

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: The church's contact information is included on the back of the envelope.

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]."

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: "There can't be light without the dark. We are praying for your safety and peace. Holy Angels CCD." Spelling errors corrected for clarity.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Breathe" surrounded by a border with floral and geometric motifs. The back contains a handwritten note featuring a quote from Richard Evans, as well as the stock signature: "From your friends at West Allegheny Middle School."

Handwritten card from a student at Goddard Middle School in Littleton, Co. The front cover features the following quote: "No act of kindness no matter how small is ever wasted." An illustration of a rainbow appears below. The inside reads: "Dear Tree of Life Congregation, I am sorry for your loss. I am writing to you from Colorado. I would like you to know people far away care for you. I may not believe in Judaism but I believe your heart is in the right place. Sincerely, Uyen [last name redacted], Littleton, Colorado."

Post-it note with handwritten message in black marker. The message reads: "Love is stronger than hate." Signed with a heart.

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "May God bring you peace and blanket you with His love during this difficult time."

Card made by a student from the George Washington University Hillel. Message in the upper left corner has been partially erased by water damage at the memorial site. The remaining portion reads: "And love to you community" followed by a heart symbol. The message in the bottom right reads: "Our hearts are with you- sending love your way" followed by heart symbol below.

Program for "Adat Shalom Solidarity Shabbat" including a quotation from George Washington's letter to the Touro Synagogue and from Rabbi Harold Kusher and prayers by Chaplain Bruce Corriel and Rabbi Naomi Levy.