Historical Evidence
In 1949, Years after the St. Valentine's Day Massacre, an antique furniture storage business opened in the warehouse where the massacre occured.  The new owners came to know about the history of the building after opening their business.  The storage business failed to flourish - sight-seerers being the primary traffic. 

When the building was demolished in 1967, a Canadian businessman purchased the bullet ridden brick wall.  He built the 417 bricks into a night club in 1972.  This business failed and was closed just three years later.  The businessman advertised and sold the "famous" bricks for $1,000 each.

It is reported that death, financial ruin, illness and personal strife befell anyone who purchased the bricks.  He had almost 100% return rate on his bricks as the owners attributed their misfortune to the horrible energy of the bricks.

It is reported that the empty land where the massacre occurred causes dogs passing by to howl, bark and show signs of fear.  People report to hear screams and feel fearful.
A room where a student died at Fairfield  University, Dolan Hall 403, is no longer occupied because of uncontrollable heat.  Students and RA's experienced loud sounds in the middle of the night - upon inspection, no one was awake in the rooms to cause the noise. 

The Whaley House in San Francisco is actually listed by the US Dept of Commerce as an authentic haunted house.  The house was built on on the site of a public gallows - the location of many deaths and gatherings of mobs.
The San Luis Colorado Valley has a rich history involving american indians, hispanics, military activity, cowboys, miners, railroaders, farmers and is the site of hundreds of complicated and unusual animal mutilations.  It is impossible to know all the history that impacts any land, this valley seems to be a culdron of dramatic activity.  A major trade route, the Old Spanish Trail passed right through San Luis Valley; The explorer John Fremont's expedition party was snowed in the valley in 1848; the "colorado cannibal", Alfred Packer was imprisoned near Saugauche prior to being sentenced for the murder of 5 prospecting partners.