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."

Card with illustration of two dragonflies on the cover. Message affirms the power of love to triumph over hate. The information on the back indicates that this card was purchased in support of UNICEF, the United Nations International Children's Emergency Fund.

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 upper left. Minor bleeding to back and signs of water exposure; creasing.

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: "We are with you, our brothers and sisters. Stand strong within your faith- unyielding, unshakeable. Do not despair." The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in blue marker. The message reads: "Thank you, so many people who come to bear witness. You meant a lot to us." Signed with a heart.

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."

Black hockey stick with the words "Crosby 87" in white lettering along the upper shaft. Stick has black tape around the blade and clear packing tape bound around the handle.

Note addressed to all the victims of the October 27 attack. Written on a dark grey card.

Business card from Art of Steel, Ltd., a gift store located in Pittsburgh's Strip District neighborhood.

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.

Handmade card in colored marker on paper. The card reads: "Love" and is illustrated with a heart below. Mild dirt stains throughout. The card has been laminated.

Summary: New York Jewish Week breaking news report on the October 27 attack.

Glass vase containing bouquet of synthetic orange, white, and red flowers. Also includes synthetic roses in cellophane. Note with typed text taped to vase. Note reads, "For our dear friend Joyce Fienberg, from [redacted], Green Templeton College, Oxford University, and [redacted]."

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.

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.

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 letter is dated Oct. 28, 2018 and contains words of condolence and prayer. The church's contact information is included on the back of the envelope.

Video of "An Act of Valor" event held at the Heinz History Center, featuring October 27 attack survivors Dan Leger and Tim Matson and Rauh Jewish Archives Director Eric Lidji.

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.

White envelope with blue border and curlicue designs in the four corners. Handwritten note in black ink on the recto reads: "Tree of Life Congregation." Staining and color fading due to exposure to the elements at the Wilkins memorial. The reverse side features a diamond pattern and has suffered from extensive tearing due to exposure to the elements at the Wilkins memorial.