Hi Kris,

Depending on the location and years you are interested in, many state GIS
or library sites offer free aerial imagery that is usually available for
download and use in GIS software. For example, in Connecticut, black and
white aerial imagery is available for 1934 and is very high resolution:
http://magic.lib.uconn.edu/mash_up/aerial_index.html

Many states now also offer LiDAR and derivatives such as digital elevation
models (DEMs) that are often free and downloadable as well. Here is an
example also from Connecticut:
http://www.cteco.uconn.edu/data/lidar/index.htm

So depending on where you are working, I'd suggest seeing if such sites are
available to you.

Hope that helps,
Kate


On Wed, Aug 12, 2020 at 11:30 AM <[log in to unmask]> wrote:

> Hello all,
> I just got word of a site that offers a series of dated Aerial photos.
> I am working a late fur trade site so I purchased  one ,in hopes of
> picking out old features
> that are  documented in the historical record .
> has any one used this type of imagry with success?
> I have no access to Lidar scan im my budget.
> Just putting this out for opinions on the subject.
> Thank you
> Kris R. Oswald
>
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