This guy was found a little over 3 weeks later than her - about 60 miles away on a pretty straight run south from White Haven - dead of a suicide.
I'd bet - if they could find his body and match the baby's DNA, he'd be the father.
http://doenetwork.org/cases/1299umpa.html
Unidentified White Male
The victim was discovered on January 16, 1977 in Albany Township, Berks County, Pennsylvania
Probable Year of Death: 1977
Cause of Death: Suicide by drug overdose
State of Remains: Recognizable Face
--------------------------------------------------------------------------------
Vital Statistics
Estimated age: 25-35 years old
Approximate Height and Weight: 5'10"-5'11; 155 lbs.
Distinguishing Characteristics: Reddish brown, long and curly hair; blue eyes. Full beard. T-shaped scar on left side of chin.
Clothing: Dark brown suede/buckskin jacket with tassels on the sleeves and torso (size 38); faded blue jeans (Wrangler brand, size 30x34); brown leather belt; brown, knit turtleneck sweater (labeled Jules Pilch-Doylestown/Hatboro, size "M"); long winter undershirt and pants (size "S"), military issue with laundry mark B-0654; two pair of socks (one pair black, the other wool); brown leather hiking boots, ankle length with black Vibran soles (size 10-10 1/2); leather gloves; sunglasses.
Personal Effects: He was wearing a 14K white gold ring with a blue stone; his pockets contained a comb, pen, pencil, matches and $1.78.
Fingerprints: Not Available
Dentals: Not Available
--------------------------------------------------------------------------------
Case History
The frozen body of the victim was found by two hikers in a cave below an area called The Pinnacle along the Appalachian Trail, in Albany Township, Pennsylvania on January 16, 1977. The cave where he was found is only accessible by foot.
There is little documentation available for this unidentified man. Any photos, autopsy reports, possible fingerprints or dental records have been lost. He was buried in the Berks County Potters Field, however, there are no burial plot records available and his exact location in the cemetery is unknown at this time.