Calvin R. Corbin, known as FROG, was 53 when he was killed on July 9, 2010, in the vicinity of the 2300 block of Tioga Street in Philadelphia. His death was officially ruled a homicide, and an obituary the following year noted the loss felt by his wife, children, grandchildren and many friends and family.

No information about criminal charges, trials, convictions, or sentences has been found.

If anyone knew Calvin, his family, or witnessed something in that neighborhood around July 9, 2010, please share information that might help fill the gaps in this case.