Ms. Haddon, who carved a path all her own in the modeling world, was found dead on Friday morning from what authorities believed was a carbon monoxide leak.

Dayle Haddon, a model who graced magazine covers and appeared in TV shows and films including “North Dallas Forty,” “Max Headroom” and “The Hitchhiker,” died in an apparent carbon monoxide leak in Solebury,

Dayle Haddon, one of America's first supermodels, who later gained notoriety as an actress, and humanitarian died in Bucks County, Pennsylvania of carbon monoxide poisoning.

Dayle Haddon, a model and actress who graced many a magazine cover in the 1970s and 1980s and bucked the fashion industry by continuing to model later in life, was found dead at her daughter’s home in Bucks County,

The former Sports Illustrated model pushed back against age discrimination by reentering the industry as a widow.

First responders were called to the property just after 6:30 a.m. Friday after receiving reports of a 76-year-old man lying unconscious on the first floor of the suite, the Solebury Township Police Department said.

A 76-year-old woman found dead of suspected carbon monoxide poisoning at a historic Bucks County farmhouse property early Friday has been identified as Dayle Haddon, who had a successful career as a model in the 1970s and ‘80s and later became a UNICEF ambassador.

Dayle Haddon, a model and an actress who appeared in numerous films, has died at age 76 from suspected carbon monoxide poisoning.