(CNN) The FBI is hoping portraits of women drawn by the man who says he killed them will help them to identify the victims and notify their families.

The agency released 16 images on Tuesday, drawn from memory by Samuel Little, who told authorities they are just some of the more than 90 people he killed over three decades.

Photos: FBI releases hand drawn portraits of Samuel Littles victims The FBI released these portraits drawn by confessed serial killer Samuel Little, who claims he's killed at least 90 people. He claims the portraits are of his victims. The FBI urged anyone with information about the victims to call the bureau's Violent Criminal Apprehension Program at (800) 634-4097. Hide Caption 1 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims White female killed in 1997 in Phoenix, Arizona. Victim possibly called "Ann." Hide Caption 2 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female between 35-40 years old killed in 1981 in Atlanta, Georgia. Hide Caption 3 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims White female, age 26, killed in 1983 or 1984. Victim possibly from Griffith, Georgia. Hide Caption 4 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female between 23-25 years old killed in 1984 in Atlanta, Georgia. Victim possibly a college student. Hide Caption 5 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims White female killed in 1984. Met victim in Columbus, Ohio. Body disposed of somewhere in Northern Kentucky (city unspecified). Hide Caption 6 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims White female between 20-25 years old killed in 1972 in Prince George's County, Maryland. Victim possibly from Massachusetts. Hide Caption 7 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Hispanic female in her 40s. Killed in 1988 or 1996. Victim possibly from Phoenix Hide Caption 8 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female between 25-28 years old killed between 1976 and 1979 or in 1993 in Houston, Texas. Hide Caption 9 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims White female between 23-25 years old killed in 1996 in Los Angeles. Hide Caption 10 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female, age 40, killed in 1993 in Las Vegas. Hide Caption 11 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black male, age 18, killed in 1971 or 1972 in Miami, Florida. Victim possibly called "Mary Ann" or "Marianne." Hide Caption 12 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female, age 24, killed between 1987 and the early 1990s in Monroe, Louisiana. Hide Caption 13 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female between 35-45 years old killed in 1977. Met the victim in Gulfport, Mississippi. Victim possibly from Pascagoula. Victim possibly worked at Ingalls Shipyard. Hide Caption 14 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female, age 26, killed between 1976 and 1979. Met victim in St. Louis, Missouri. Victim possibly called "Jo." Hide Caption 15 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female between 28-29 years old killed in 1984 in West Memphis, Arkansas. Victim picked up in Memphis, Tennessee Hide Caption 16 of 17 Photos: FBI releases hand drawn portraits of Samuel Littles victims Black female killed in 1976 or 1977. Body disposed of somewhere outside of Wichita Falls, Texas. Hide Caption 17 of 17

"We are hoping that someone -- family member, former neighbor, friend -- might recognize the victim and provide that crucial clue in helping authorities make an identification," said FBI spokesperson Shayne Buchwald. "We want to give these women their names back and their family some long awaited answers. It's the least we can do."

The strategy has worked before, Buchwald said. Women who appeared in two previously released portraits were identified, he said.

From three murders to 90

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