Post-it note with handwritten message in black marker. The message reads: "On the street where I lived many years ago. I remember it with calm and safety. May this spot once again, one day, be a place of comfort and peace for my Jewish community and all people."

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.

Card with flying dove holding an olive branch in its mouth over a navy blue background with light blue tendrils on the front cover. The word "Peace" appears below the dove. Handwritten note in blue marker from Kelly M. from Freedom, Pa.

Envelope and floral tag with ribbon addressed to Marty and Robert. The tag features an illustration of an owl with mushrooms and other fauna growing out of its head. The inside contains a note to Marty and Robert, whom the sender is thankful did not attend synagogue on the morning of October 27.

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.

Wooden pedestal painted white with white Star of David and red heart affixed to front. Handwritten in pencil and black marker on the Star of David is the name "Daniel Stein." Collaged onto the heart are white pieces of paper and a translation of Psalm 34:18: "The Lord is close to the broken hearted and saves those who are crushed in spirit." Accompanying image shows all 11 Stars of David in the series.

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 affirms the sender's belief that we are all God's children. The church's contact information is included on the back of the envelope.

Card from the Friendship Circle of Illinois. The front of the card reads: "To the Jewish community of Pittsburgh sheyichyu (may they live)." The inside reads: "I have [heard] about the terrible news that happened and I feel very very bad for you. I hope moshiach (the Messiah) should come now so we could join with them now!!!" Multiple stars of David and smiley faces are integrated into the text of this card. Spelling errors corrected for clarity.

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: "You are God's chosen people. He loves you so much and so do we. We pray that love wins in your synagogue every day. God bless, The Church at Severn Run." The church's contact information is included on the back of the envelope.

Oral history with Gemma Del Duca recorded as part of the Meanings of October 27th oral history project.

Cylindrical white ceramic vase containing two bouquets of blue synthetic hydrangeas. Vase is cracked down one side from top.

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 made by a student from the George Washington University Hillel. The front cover contains an illustrated heart. The inside reads: "We stand with you. You are in our thoughts and prayers. With love, Leah and Molly from GW."

Printed paper square with the "Stronger Than Hate" emblem. Lamination has started to separate from the paper, as well as color loss, due to exposure to the elements at the Wilkins memorial.

Blank pink envelope with tape affixed on the reverse. Staining and fading due to exposure to the elements at the Wilkins memorial.

Card on pink paper with hand drawn illustrations and handwritten note. Written in a child's handwriting, the card reads: "We love you" in the upper center and is signed "Hannah" in the lower center. Various red outlined hearts with blue, red, and green shading appear on the left; a stick figure appears on the right.

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "In light of recent events, I want to send over my condolences and love. I want you to know that this is not who we Christians are. We are not hate- only love. Your community is always and forever in prayers. [Smiley face]."

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "We send LOVE to you today and always. We are on in the eyes of the Lord. When one hurts, we all hurt. When there is joy for one, there is joy for all. Prayers and blessings to you."