Can Father's Love and GPS Find Missing Baby Gabriel Johnson?

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TEMPE, Ariz. (CBS/KPHO/AP) More than a month after baby Gabriel Johnson disappeared in Texas, his father is taking matters into his own hands.

Photo: Logan McQueary with his son, Gabriel Johnson.

PICTURES: Baby Gabriel Johnson Missing

The 8-month-old's dad, Logan McQueary, met with investigators Monday, and handed over all text messages and recorded conversations he had with the boy's mother Elizabeth Johnson, who sent him a terrifying text saying she had killed the boy.

But it's not clear that she did. Johnson also told police and CBS affiliate KPHO that she gave the child to strangers in San Antonio during a road trip that started in Arizona and ended in Miami. When police picked her up in Florida Dec. 30, 2009, Gabriel was nowhere to be found.

Photo: Gabriel Johnson.

PICTURES: Baby Gabriel Johnson Missing

Now McQueary is planning to retrace Johnson's steps to find his missing son. He says he will try to recreate the GPS directions he believes Johnson followed from Tempe to San Antonio and plans to stop at hotels along the route searching for anyone who saw Johnson or his son.

Photo: Elizabeth Johnson

PICTURES: Baby Gabriel Johnson Missing

Johnson's car was found in Tempe and police believe she took a bus to Miami.

Johnson has been indicted on charges of kidnapping, child abuse and custodial interference.

She has refused to help police find her son.

Anyone with information is asked to call the FBI at (210) 225-6741 or Tempe Police Department at (480) 350-8311.

PICTURES: Baby Gabriel Johnson Missing

January 19, 2010 - Missing Baby Gabriel Johnson: Do Disturbing New Photos Show Baby's Last Day Alive?
January 13, 2010 - Did Elizabeth Johnson Sell Missing Son Gabriel Johnson, Kill Him, or Just Give Him Away?
January 11, 2010 - Couple Who Hoped to Adopt Ariz. Baby Took Lie Detector Test
January 11, 2010 - Did Elizabeth Johnson Give Her Baby to Strangers? Arizona Mom Faces Kidnapping, Child Abuse Charges
January 8, 2010 - Couple Who Hoped to Adopt Baby Gabriel Johnson Now "Persons of Interest" In His Disappearance
January 6, 2010 - Arizona Baby Gabriel Johnson Missing After Road Trip; Mom Refuses to Help Police