from KFFL:

Rams | Team signs Magro
Mon, 28 Apr 2008 09:18:33 -0700 Josh Buchanan, of NFLDraftBible.com, reports the St. Louis Rams signed undrafted rookie free-agent LB Mark Magro (West Virginia). Terms of the deal were not disclosed.
Rams | Team signs Hyman
Mon, 28 Apr 2008 09:17:52 -0700
Josh Buchanan, of NFLDraftBible.com, reports the St. Louis Rams signed undrafted rookie free-agent WR Joshua Hyman (Virginia Tech). Terms of the deal were not disclosed.
Rams | Team signs Bernard
Mon, 28 Apr 2008 09:17:08 -0700
Josh Buchanan, of NFLDraftBible.com, reports the St. Louis Rams signed undrafted rookie free-agent RB Yvenson Bernard (Oregon State). Terms of the deal were not disclosed.
Rams | Team signs Caddell
Mon, 28 Apr 2008 09:16:29 -0700
Josh Buchanan, of NFLDraftBible.com, reports the St. Louis Rams signed undrafted rookie free-agent WR Matt Caddell (Alabama). Terms of the deal were not disclosed.