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."

Post-it note with handwritten message in black marker. The note is written in Hebrew. Translated into English, it reads: "Be strong, be strong, and may we be strengthened!"

Post-it note with abstract illustration in blue and green marker.

Post-it note with handwritten message in blue marker. Tape in the upper left corner. The message reads: "This Temple's response to all this hate is beautiful. Hate is not welcome here or anywhere! My blessings to all."

Post-it note with handwritten message in green ink. The message reads: "We cannot change the past, but we can inspire the future. Let what's happened here be a warning to us all that there is no room for hate anymore."

Miniature New York State flag. Wrapped around stem of flag is a slip of laminated yellow paper reading, "In Memory of our Sister JOYCE FIENBERG z''l -- To his family and community we pray Tanuchamo min hashamayim. May God in Heaven comfort you. The Principals, Teachers, Parents, Alumni, and Students of Magen David Yeshivah. Brooklyn, NY." Part of a series of 11 flags, each dedicated to one of the victims. Additional photograph shows the entire set of 11.

Post-it note with handwritten message in blue ink. The message reads: "We are here."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "You are in our thoughts and prayers knowing our Karla was living in your neighborhood has helped us so much-"

Handmade card with black and white stripes with a printed graphic with a blue Star of David overlaid with eleven candles and the message "Our hearts cry for Shalom" in the upper center. The Stronger Than Hate hashtag appears below. A whole was punched in the upper center.

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.

Floral tag addressed to Cecil Rosenthal. The tag features a white rose on the left and the stock message: "With Deepest Sympathy" in a band on the upper center.

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..."

Handmade card in watercolor and ink on paper. The front side features a hand painted illustration of a braided Challah loaf, traditionally prepared for the Jewish Shabbat. The card is signed: "Love and solidarity from Morgantown, WV." Staining due to exposure to the elements at the Wilkins memorial.

Triangle-shaped card from a student at Fountain Valley School in Colorado Springs, Co. The card reads: "Dear members of Tree of Life, I am a Chinese [student] who is now studying in U.S. I am sorry about the situation that happened recently. Personally, I support you, do not be afraid! Peace be with you." Star of David in the upper center, peace sign in the bottom center.

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.

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Keep going" and a pattern with flowers, leaves, arrows, and shooting stars. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

Card from the Friendship Circle of Illinois. The card reads: "Baruch [redacted]. To the Jewish community of Pittsburgh sheyichyu (may they live), I'm so sorry about what happened. I am going to bring and wash my hands in the morning in honor of all those people who passed away." A smiley face with a yarmulke (skullcap) with Hebrew letters appears below. The Hebrew acronym "B"H" (Bless God/Thank God) appears in the upper right. Spelling errors corrected for clarity.

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."