All downloadable files in this site are compressed in zip format.
Clicking on a downloadable file name will cause your browser to start the
download procedure. Once a file is in your computer, it needs to be
is an excellent site for zip/unzip and similar utilities). Once
decompressed, you will note that images are in .jpg, .tif, or .gif format, and
are readable by most image display and processing programs. Some documents are
in PDF format. Reading and downloading these files requires Acrobat, which can be
downloaded from Adobe.
(Examine the Adobe page carefully before starting the download. There are
several additional installs there that you may not want).