Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the word: "Hope" surrounded by floral and geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School." A sticker with the words: "Stronger Together" appears in the upper center.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a bird feather with geometric motifs. The back contains a handwritten note, which reads: "I'm sorry for your loss and I know what it like to lose someone dear to you but it is ok they will always love you no matter where you or the[y] are. -Owen H." The stock signature: "From your friends at West Allegheny Middle School," appears upside down on the upper right.

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."

Paper cutout in the shape of Star of David; composed of two triangles painted in gold and blue paint respectively. The star reads: "Hate is not the answer."

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: "To Tree of Life members and to Jewish everywhere. Adam and Eve let sin in the world, but God gave us another option, Jesus. But through terrorism nothing ever, will drive us apart from being a religious nation. We are one people if they are any differences we should talk them out.

Card made by a student from the George Washington University Hillel. Card reads: "We love you and are thinking of you. May we all see better days ahead. Love, GW Hillel."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "I am here in this moment" surrounded by arrows and other geometric symbols. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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

Oral history of Meryl Ainsman, recorded as part of the Meanings of October 27th Oral History Project.

Post-it note with handwritten message in blue marker. The message reads: "One Love" with peace and heart symbols replacing the letter "o" respectively.

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: "Tree of Life Synagogue, We pray for you. May you have a good recovery and keep close to God. -Elizabeth, Holy Angels CCD."

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: "Tree of Life Members, You are in our thoughts and prayers. -Holy Angels CCD."

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

Floral tag from floral arrangement, which reads: "We love you, pray for you and stand with you during this time. May God provide with His peace and comfort." The message is printed on a tag from a local florist.

Photocopied legal document. Typed with embossed seal and some handwritten annotations, 12 pages.

Copy of the original charter of Tree of Life Congregation. Four-page typescript document with handwritten annotations. Describes purposes of the congregation and names charter members.

White posterboard with handwritten message in colored marker. The poster features a quote from 1 Peter 4:8, reading: "Continue to show deep love for each other." The word "love" is embellished with over a dozen hearts. The word, "Trump" has been crossed out on the upper left corner on the reverse.

Printed label which reads: "Thinking of You. Liberty K-5 students." The label is taped to a piece of clear cellophane.

Post-it note with handwritten message in green marker. The message reads: "Never again." The signature is illegible.