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

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 with mosaic pattern evoking a flame on the front cover. The inside contains a note of sympathy from the board and staff of Mazon, as well information about the organization

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.

Floral tag from floral arrangement, which reads: "There is no good way to express the grief and horror our community feels. We will continue to mourn with you." The message is written in black ink on a printed tag with multicolored flowers in the lower right corner. The reverse is stamped with the contact information for Squirrel Hill Flower Shop.

Folded card on pink paper. A faded Star of David appears on lower right corner. Blue and yellow staining throughout. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

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.

Blank pink envelope with tape affixed on the reverse. Staining and fading 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.

Diamante poem by Jesse [last name redacted], which was sent with the materials from Emergency Ministry Services, a faith-based training and disaster response NGO in San Juan Capistrano, Ca., affiliated with the Orange County Church on the Rock. A diamante poem is a seven-line unrhymed poem which is shaped like a diamond.

Handwritten note and envelope from new residents of Squirrel Hill, formerly of Santa Barbara, Ca.

Prayer card with reproduction of "The Miraculous Icon" depicting the Virgin and Child. According to the text on the front cover, this prayer card was blessed at mass with holy water and incense. The inside features various recommended prayers for healing and petitions.

Program for a memorial service at Beth Israel Congregation in Washington, Pa. Shows an illustration of the synagogue and lists speakers for the evening.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "You are in our thoughts and prayers knowing our Karla was living in your neighborhood has helped us so much-"

Post-it note with handwritten message in blue marker. The message reads: "We will not be bystanders. We will take action. All of us have a role to play. Everyone can help."

Miniature New York State flag. Wrapped around stem of flag is a slip of laminated yellow paper reading, "In Memory of our Brother JERRY RABINOWITZ z''l -- To his family and community we pray Tanuchamo min hashamayim. May God in Heaven comfort you. The Principals, Teachers, Parents, Alumni, and Students of Magen David Yeshivah. Brooklyn, NY." Part of a series of 11 flags, each dedicated to one of the victims. Additional photograph shows the entire set of 11.

Post-it note with handwritten message in black marker. The message reads: "No words! RIP." Stain in the upper right corner due to exposure to the elements at the Wilkins memorial.

Folded card on white paper. Extensive dirt staining. Due to exposure to the elements at the Wilkins memorial, the message on this card is no longer visible.

Handwritten letter from a student at Hebrew Academy, a private Jewish day school in Montreal, Quebec. The letter reads: "Dear Rabbi, I am so sorry for your loss. I hope it does not happen again. Refua Shleima (speedy recovery). I hope that everyone is comfortable and safe. Ahava Montreal ha [Hebrew Academy] 4A.