Note in black ink on cardboard reading: "I do not have much and I have fallen far from the faith but I stand with you. I pray for you. I love you not because of Religion or faith but because we are All Human. - A Mother."

White synthetic tree with 11 pieces of black lace tied to branches and a rosary tied to top branch. Square base of tree has switch for battery operated power. Attached to front of tree is a greeting card with message from sender.

Floral tag from floral arrangement sent by Daniel Mulhall, the Irish ambassador to the United States, on behalf of the people of Ireland. The note is printed on a tag with a beige background from a local florist.

Handwritten floral tag taped to a square piece of clear cellophane. The tag reads: "11 beautiful roses for the 11 beautiful souls lost." Signed with a heart.

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

Post-it note with handwritten message in black ink. The message reads: "You are so strong. Thank you for being so strong in the face of evil. Please be more Jewish. We must show our community's great life in the wake of antisemitism. That is the best revenge. Growth. Love. Life."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Breathe" surrounded by a border with floral and geometric motifs. The back contains a handwritten note featuring a quote from Richard Evans, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card made by a student from the George Washington University Hillel. The front cover contains a bilingual Hebrew and English message: "Haverim (friends) in Pittsburgh" with a Star of David below. The inside (from right to left) reads: "Sending love, solidarity, and hope. Our community is the strongest in the world! -Sam, GWU student, Colorado Springs, CO, Temple Beth Torah."

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.

White posterboard folded into a card with a white plant stenciled on the front. Stencil done with sponge and multiple colors of paint. Interior includes a handwritten message and signatures to Tree of Life. Back has a message written in pencil and bleed through from markers.

Floral tag from floral arrangement, which reads: "With Love from our Family to Yours [heart]." The note is written in black marker on rectangular piece of wrapping paper with brown and red stripes.

Folded card with marker illustration. Cover features a tree with a heart in the leaves. Inside reads: "We stand with you :-) :-) :-)" and features a landscape with a tree in the center and the sun in the upper right corner. Back shows a tree with three five-pointed stars in the leaves.

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.

Handwritten card from a student at Goddard Middle School in Littleton, Co. Front cover features a quote attributed to the fictional Sesame Street character, Cookie Monster: "Sometimes me think, what is friend? And then me say, friend is someone to share the last cookie with." Illustration of a smiling face with a long nose and blond hair appears below. Signed: "Fernando." The inside reads: "Dear Congregation, I am sorry for your losses. We are here for you all the way from Colorado. Sincerely, Fernando Littleton, CO." Spelling errors corrected for clarity.

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.

Card from a congregant at the Holy Angels Parish. The front cover contains a stock illustration of a haloed dove flying in front of Noah's ark. Due to water exposure at the memorial site, the message in this card has been partially erased. The remaining text reads: "everyone...we wish the best for everyone who was effected. Michael, Holy Angels CCD 6th grade."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of 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."

Post-it note with handwritten message in black and red marker. The message reads: "If you mess with us. You mess with the entire world." Signed with a heart, colored in red and outlined in black.