Just because I hate finding questions online with no resolution, I'm coming back with the answer. Here is how I was able to find the link I was looking for within the page's HTML:

my @test_frames = $mech->xpath('/html/body/div/p/a', one => 1, frames 
+=> 1);
printf(TEST_FH "result is %s\n", $test_frames[0]->{outerHTML});

[download]

I obtained the xpath using Firebug (highlight the link on the webpage, right click, select "copy Xpath") then used the outerHTML (as opposed to innerHTML) to get the URL.

In reply to Re^10: WWW::Mechanize::Firefox and dynamic pages by Special_K
in thread WWW::Mechanize::Firefox and dynamic pages by Special_K

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