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.

Post-it note with handwritten message in blue ink. The message reads: "Stronger than hate." Illustrated with a peace symbol. Color bleeding and staining due to exposure to the elements at the Wilkins memorial.

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 "Irving Younger." 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.

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.

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 "Melvin Wax." 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.

Printed floral tags from floral arrangements sent by Shadyside Presbyterian Church.

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.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Friends, Words cannot express our sorrow the losses you all have endured. That your community of faith, love, peace was assaulted with such hatred and brokenness-our hearts ache for you all. We stand with you in faith and love in the face of such destruction. We stand with you in prayers for comfort and healing in the midst of your pain. We stand with you as a force for love in a hurting world. The [last name redacted] Family, Lauren, Joel, Kieran, Micah."

Turquoise envelope with handwritten inscription in black ink addressed: "To the Tree of Life." Staining due to exposure to the elements at the Wilkins memorial.

Multicolored printed card with message that affirms the value of kindness.

Folded card with marker and colored pencil illustration. Front and back cover feature spread of tree emerging from blue field. Interior features scribbles and name "Veronica." Additional message reads "Our hearts go out to you at this tragic time, along with our wishes for healing. The Beth Chai Congregation of Greater Washington, D.C."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Words can't begin to express the sorrow we have felt and experienced as a church, country and people for the senseless loss and hatred you all have experienced. We pray and hope you feel God's peace, comfort and loss in this time of great sorrow. Love will win. Peace will win. Always. Your sister in God's love..."

Post-it note with handwritten message in blue marker. The message reads: "Yes, we miss you with our hearts, Jerry." Signature illegible.

Card with abstract images painted and drawn by a young child. The words: "Love on you" appear in large letters inside on the lower left.

Post-it note with handwritten message written in black marker. The message reads: "We are always with you. You are not alone. Be strong." A smiley face and heart appear below.

Folded card with marker illustrations. Cover features two balloons with text "It's fine we are here with you." Interior features illustration of abstract diamond designs with text, "I'm saddened by the tragic attack on your community in Pittsburgh - and on all Jews. Please know that you are not alone, and have lots of support from good people near and far. L'shalom."

Post-it note with handwritten message in black marker. The message reads: "We love you!" An illustrated heart appears in the upper right corner.

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.