DigiCAD is a program that can provide corrected perspective drawings  
of buildings, provided one knows the dimensions of some part that can  
then be used as a baseline for the remainder. For instance, knowing  
the dimensions of a door, window or some other part of the structure  
would get you to an accurate drawing of the facade.

Lyle Browning


On Mar 15, 2007, at 4:10 PM, Mike Will wrote:

> I am presently attempting to determine building dimensions and the
> distances between structures from historic photographs taken during  
> the
> 1880s and 1890s.  I’ve been using various photogrametric  
> calculations and
> perspective drawing measuring techniques, but I can’t help but feel  
> that I
> may have overlooked something.  As such, I would appreciate it if  
> someone
> could provide me with information / references for determining  
> dimensions
> from historic photographs.
>
> Also, I would appreciate it if someone could provide me with  
> references
> pertaining to frontier / boomtown type, wood framed and timber framed
> construction practices for residential and commercial structures  
> (ca.1880s
> to 1900s).
>
> With Thanks,
> Mike Will
> Vancouver, Canada