What is known about 6 unidentified Gacy victims

Here is what is known of the six unidentified victims of John Wayne Gacy. Anyone with a family member fitting that description who went missing during the periods indicated is asked to supply the Cook County sheriff's department with a DNA sample for comparison. See cookcountysheriff.org/unidentified-victims-john-wayne-gacy.

JOHN DOE #5

Caucasian male, age 22-32; height 5'7" to 5'11"

Disappeared between Jan. 20, 1976, and March 15, 1977.

JOHN DOE #10

Caucasian male, age 17-21; height 5'7" to 5'11"

Disappeared between March 15, 1977, and July 5, 1977.

Had a previous injury to his left clavicle that had healed.

Fillings show he had been under the care of a dentist.

JOHN DOE #13

Caucasian male, age 17-21; height 5'11" to 6'2"

Disappeared between Aug. 6, 1976, and Oct. 5, 1976.

Dark brown wavy hair

One of his upper teeth was displaced behind another tooth, which officials say people who knew him well would have noticed.

JOHN DOE #21

Caucasian male, age 21-27; height 5'8" to 6'

Disappeared between Aug. 6, 1976, and Oct. 25, 1976.

JOHN DOE #26

Caucasian male, age 22-30; height 5'2" to 5'6"

Disappeared between June 13, 1976, and Aug. 6, 1976.

JOHN DOE #28

Caucasian male, age 14-18; height 5'6" to 5'11"

Disappeared between Jan. 3, 1972, and July 31, 1975.