Collage with a hand drawn tree in the center. Leaves comprised of multicolored tissue paper; one ready-made decorative leaf in orange and yellow fabric. Handwritten messages and illustrations in multiple colors on either side of the tree; signed lower center.

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 mourn for you loss and we pray the God of Abraham embraces you in fresh, new ways today and always! Shalom!" The church's contact information is included on the back of the envelope.

Handmade sign illustrated with colored pencil. The sign reads, "Love is Stronger Than Hate," written in blocky bubble letters. An additional message, reading: "We will not forget you," written in an italicized script, appears on top of the bubble letters. Lightly shaded in the background.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "My prayer- my prayer is for all the people affected to be at peace. Please Lord look after their friends and family, loved ones in this time of need. In God's name I pray. Amen."

Large square card from a student at Fountain Valley School in Colorado Springs, Co. Card reads: "Dear members of Tree of Life[s], I am an international student from China. I heard the sad news about the sad thing [that] happened in the Synagogue. I felt really sorry about that and I know I can't do anything to let you feel better. But I am always on your side. Support the sad family. So please strong to stay together. Peace be with you. - Isabel L." Illustrated Star of David and peace sign on lower left.

Handwritten card written in pencil on paper. The card reads: "Dear Family, Hello my name is Elisha D. I am from Netivot, we stand together with you because a loss for you is a loss for us. May you only see simchas."

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 front of the note reads: "Heaven is for everyone! God is Love- We love you. 'If any man says he love God, he's a liar if he loves not his brother.' 'Love they neighbor as thyself.' We are all children of the Lord. We are all the same in God's eyes. And they that be wise shall shine as the brightness of the firmament." Illustrations of a smiling heart, five-pointed star, cloud, rainbow, as well as flowers, appear below.

Folded card with colored pencil illustration. Cover shows a whimsical landscape with a flower, smiling sun, and a fruit tree. Inside features a heart and purple circle surrounded by seven floating items, perhaps leaves or butterflies. Back shows a drooping plant with heart shaped leaves.

Handwritten card in red and green crayon on paper. The card reads: "We love you. Levi" and illustrated with a flower, several hearts, and a mail delivery truck. Color bleeding and creasing due to exposure to the elements at the Wilkins memorial.

Handwritten note in red marker on a piece of brown paper from a family. Dated 10-27-18.

Post-it note with handwritten message in blue ink. The message reads: "From strength to strength [Star of David]. With you from KBH and all of Virginia Beach."

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope contains the handwritten inscription: "God Bless" [heart]. The front cover reads: "Faith is the friend that comes along when things just seem to go all wrong." The inside reads: "My mother and I were so saddened when we heard of the tragedy that occurred. It seems unthinkable that a human being could behave in such a deplorable manner. My mother and I are keeping everyone and their families in our hearts, minds and prayers.

White poster with handwritten message in black ink reading: "Pittsburgh loves all our neighbors." The hashtag, "Pgh Strong" is written vertically in the lower left corner. Extensive color bleeding due to exposure to the elements at the Wilkins memorial.

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. The inside reads: "Tree of Life, I'm sorry that your synagogue has lost many lives on Saturday morning. You are all in my prayers. With love, Maeve [last name redacted] 6th Grade."

Card and envelope featuring hand-drawn image of dove. Message in card expounds upon the biblical association of the dove as a symbol of peace.

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 addressed to David Rosenthal, written using personal details from various public sources.

Rectangle-shaped card from a student at Fountain Valley School in Colorado Springs, Co. Card reads: "Dear members of Tree of Life synagogue. I am an international student from China. I am sorry for your loss and will stand with you. May peace with you and stay stong. Shalom. Warmly, Xiao Chao [last name redacted]." Small Star of David in lower right.