Post-it note with handwritten message in red marker. The message reads: "All of New York City feels your pain."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Tree of Life Synagogue, Though I feel helpless and unsure of what to do or how to help, this I offer. I stand with you, I mourn with you, I fall on my [?] and cry with you, I get back up with you, I move forward with you. Good and beautiful people of Tree of Life. God bless you, Steve."

Floral tag from floral arrangement sent by Michelle. The tag reads: "Shalom! Love, Michelle." The message is written in black marker on a printed tag with a green background and floral motifs.

Card addressed to Jerry Rabinowitz. Cover features a reproduction of a painting by Frank Crosby, a resident of the Emmaus Community of Pittsburgh. The inside contains messages of love and support written by other members of the Emmaus Community.

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.

Photograph showing group of adults and children along the outer wall of a sukkah at the Hebrew Institute in Squirrel Hill.

"I voted" sticker with the "Stronger Than Hate" emblem on an orange background. The sticker includes the logo of the local printing company, Raff Printing, Inc. on the lower right. Dirt and other materials on the adhesive back due to exposure to the elements at the Wilkins memorial.

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

Handwritten note in marker on paper. The note contains a quote from Job 14:7, reading: "At least there is HOPE FOR A TREE if it is cut down, it will sprout again, [its] new shoots will not fail."

Clear ribbed glass bottle with packing tape around base. Dirt and small leaf stuck to tape. Bottle contains a variety of synthetic flowers and greenery including sunflowers, oak leaves, grass, and glitter-covered poinsettias.

Flyer with "Stronger Together" in blue and red handwritten font against photograph of the skyline of Pittsburgh with a tree imposed against the clouds. Includes information about event and the names of featured performers, as well as various logos. A small note reads: "In memory of our holy brothers and sisters who died sanctifying G-d's name at Tree of Life-Ohr L'Simcha."

Oral history of Tim Crossen, recorded as part of the Meanings of October 27th Oral History Project.

Post-it note with handwritten message in black marker. The message reads: "Miss you [underlined]! Love and Hugs."

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

Post-it note with handwritten message written in black marker. The message reads: "We are always with you. You are not alone. Be strong." A smiley face and heart appear below.

Card with colored pencil and marker illustration. When opened, front side shows illustrations of two five pointed stars and a stack of hearts, and is inscribed: "Margow. We are sorry for your loss." Back shows a tree with spiral-shaped branches and heart-shaped bow and arrows with a rectangular border with hearts in each corner.

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.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Tree of Life, Love always wins. We are with you. Blessings, Dolly and Stan [last name redacted]."

White foam core poster with an outline of the city skyline and "Pittsburgh city of love" written in red, black, and blue marker. Reverse side includes typed text about membership with the National Council on Education for the Ceramic Arts.