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: "To my Brothers and Sisters, In spite of the fear, ignorance and hate, may your resolve grow stronger and your love grow bolder. Bless God and God Bless, Brenda." The church's contact information is included on the back of the envelope.

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 contains prayers for healing and comfort. The church's contact information is included on the back of the envelope.

Post-it note with handwritten message in black marker. The message reads: "With you in strength and heartbreak and love that remembers all that you are."

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: "God Bless You." The church's contact information is included on the back of the envelope.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Hello, Dear Friends- I am a visitor at this church today- as the wife of a Catholic with a Jewish son-in-law and a nephew who lives on Squirrel Hill Ave- I just had to send some Presbyterian prayers as you grieve and recover. We are all the Family of God! Love and blessings- Mary Ellen [last name redacted]."

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

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."

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 contains a prayer for God's grace and love. The church's contact information is included on the back of the envelope.

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 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 with floral and geometric motifs. The back contains a handwritten note, as well as the stock signature: "From your friends at West Allegheny Middle School."

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 contains messages of love and prayer. The church's contact information is included on the back of the envelope.

Folded card on yellow paper with handwritten messages and marker illustrations. The front cover reads: "Have Hope." The inside reads: "Remember to stay hopeful during these hard times. Our are thoughts are with you." A yellow-outlined smiley face appears below. The back reads: "Pittsburgh will support you" and features a large Star of David illustrated in yellow.

Note addressed to Dr. Jerry Rabinowitz reading: "Rest in Peace Dr. Rabinowitz. Sue [last name redacted]. Shalom."

Folded card with crayon illustration. Cover features heart surrounded by circles and name Max. Interior reads "Things do get better. I am sorry for the 11 killed and their families. But the world's not over. How will you bounce back from the tragedy. You guys are really strong sticking through the tragedy." Second note reads. "We are with you! Michele."

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Dear Members of the Tree of Life Synagogue, Although I am a Presbyterian, I have Jewish ancestors. I was so saddened by the tragedy your congregation has [?]. May you have the blessings of the Lord, and may the ones you have lost rest in peace. William H. [last name redacted] San Diego, CA."

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of a turtle with floral and geometric motifs on its back, legs, and neck. The back contains a handwritten note and a sticker with blue text reading: "Stronger Together." The stock signature: "From your friends at West Allegheny Middle School" appears in the lower center.

Hallmark card from a member of St. Peter's Episcopal Church in Londonderry, New Hampshire. The envelope features an illustrated heart. The front cover reads: "Faith is the friend that comes along when things just seem to go all wrong." The inside reads: "To the Tree of Life, My thoughts and prayers are with yours. Nancy [last name redacted]."

Glass vase with four blue and white star-shaped balloons and a miniature American flag. Handwritten in black marker on white balloon is "Love One Another Right Now" with two hearts. Attached to front of vase is typed note that reads, "For our beloved neighbors that worshipped at the Tree of Life Synagogue, with great sadness, but also with a recommitment to a world of justice, reason, and love - [redacted], Chatham University;-[redacted], Washington DC - [redacted], Fouzhou China- [redacted], Sao Paulo Brazil."

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 condolence note written in black marker on yellow paper addressed to the congregants of the Tree of Life synagogue.