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Michael Calabro took his portrait of a homeless man named George last Thursday, when the windchill in Chicago reached -39 degrees.
The photo shows George's face covered in frostbite and icicles coating his beard. Even though he is smiling in the portrait, George told Calabro "I'm in a lot of pain."
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"I met George a few years ago when his face was blackened from frostbite. I expect his face to get worse in the next few days once the frozen skin dies and starts to slough off," Calabro said in an email to ABC 7 Chicago.
The Chicago Coalition for the Homeless estimates that there are 80,000 others like George.
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If you are homeless or know of some who is and wants shelter, call Chicago City Services at "311" or (312) 744-5000.