Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a heart with floral and geometric motifs. A handwritten note and signature appear in the upper and lower right corners respectively. The back features the stock signature: "From your friends at West Allegheny Middle School."

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.

Post-it note with handwritten message in black ink. The message reads: "We stand with you, always, with prayer and love."

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."

Folded card with colored pencil illustration. Cover reads: "Remember that we are here with you" with a heart below. Inside shows an illustration of stick figure surrounded by six hearts. Back reads: "It's fine we're here with you" and features an upright hand.

Post-it note with handwritten message in black marker. The message reads: "We are stronger together!!" Signed: "Arielle."

Glass jar containing nine miniature Israeli and American flags.

Laminated printed tag with the contact information for David [last name redacted], a dentist from the Pittsburgh area.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter is dated Nov. 4, 2018 and reads: "Tree of Life, I give thanks daily to Yahweh, Father Abraham, Moses, and Jesus! We are all one with you, bonding with you, suffering with you, and healing with you! God help us all daily to Love, Joy, and Peace! Please let our pastor Karla Shaw know how we can help further! Shalom, Larry A. [last name redacted] Semper Fi America! San Diego, California."

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.

Post-it note with handwritten message and illustration. The message reads, in Hebrew: "Am Yisrael Chai (The People of Israel Live)." A large heart and smaller Star of David appear in the upper and lower center.

Laminated mixed media collage with paper, dried leaves, and marker. Tree in the center; two clouds and sun in upper register. Handwritten inscriptions in various marker colors on tree trunk and center left. Bleeding to back and signs of water exposure; creasing.

Note addressed to Jerry Rabinowitz written on the back of a business card from Doug [last name redacted], a certified Pilates instructor in the Pittsburgh area. The note reads: "Dear Jerry- I will miss you. Best peace sir!"

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear People of God, There are no words sufficient... Know that I and this people of our congregation stand with you- we are with you. With the love of the true and living God, Patrick [last name redacted] San Diego, CA."

Printed sign with red, blue, green, and purple ink. The sign reads: "Lifting up our prayers for the Tree of Life synagogue, victims, families, and first responders."

Post-it note with handwritten message in green and red marker. The message reads: "Love is stronger than hate. Rest in peace. Jaime." The "o" in love and the dot in the "i" in Jaime are written with hearts.

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: "Love conquers all!! You are a child of God, therefore, you are loved. Continue to pray and worship. Please don't let hate win, love will overpower through all. Jenna [last name redacted]. YOU ARE LOVED!" The church's contact information is included on the back of the envelope.

Card from the Friendship Circle of Illinois. The front cover reads: "To the Jewish community of Pittsburgh sheyichyu (may they live)." The inside reads: "I heard what happened and give my fullest sympathy. I am heartbroken by what happened, and really hope moshiach (the Messiah) will come and you'll be united with your dear ones." Spelling errors corrected for clarity.

Collage with a hand drawn tree in the center; leaves comprised of multicolored tissue paper. Handwritten messages in pencil and pink ink on either side of the tree.