At the Croke-Patterson-Campbell Mansion, Urban Legend recounts tales of suicidal guard dogs, grieving mothers, swinging parties that crash the house one moment and fall silent the next. Secret chambers supposedly entombed the body of a girl, while unexplainable drafts emanate from the castle's depths. Residents of the red sandstone castle and Denver historian Phil Goodstein tell tales of "a body buried in the basement," suicidal guard dogs hastened through a castle turret window by other-worldly beings and a friendly spirit named Maggie who visits on cold winter nights.
Another Legend from the Rocky Mountain News states: The first reports were in 1970 when the owners bought two dobermans. Not long after they were found dead by jumping from the third storey window. A bit later on the lady of the house had a baby but it died in the third storey nursery and the lady commited suicide after that the mansion became a museum.
We don't know who is in this window considering it is daytime. The Temp was in the mid 50's and the typical clear Colorado sky. We don't know if this is Maggie. The conditions are not right according to urban legend.
Notice the figure in the window has moved to the left 
What we know about the CROKE-PATTERSON-CAMPBELL MANSION as fact:
CROKE-PATTERSON-CAMPBELL MANSION
428-430 E. 11th Ave.
National Register 9/19/1973, 5DV.172
The 1890 sandstone residence with attached carriage house is a rare example of the use of Chateauesque style architecture in Denver . Thomas B. Croke, who gained fame as a merchant and experimental plant breeder and later served as a state senator, commissioned the house and lived there until he sold the property to Thomas M. Patterson in 1892. Patterson served as a territorial delegate to Congress in 1874, a U.S. Congressman in 1877-79, U.S. Senator from 1901 to 1907, and edited and published the Rocky Mountain News until 1913. Patterson's daughter, Margaret, married Richard C. Campbell, and the couple lived with the Senator until 1916. Campbell became a prominent local financial leader and worked as business manager for his father-in-law at the Rocky Mountain News.
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