An Article by Emily Leman in the Washingtonian magazine.  She does a nice job summarizing what to do if you loose your pet. 

http://www.washingtonian.com/print/articles/3/177/6724.html 

A very detailed article by Ron Cassie of The Frederic Post. 

Mr Cassie wrote a very useful article about recovering lost pets.  He included some good pointers for people to help them.  One thing his article illustrated  the value of a good start article. We need something that smells like your missing pet but not other animals or people that may have been walking through the area recently.  We have been in the position of not able to assist when a veterinarian lost a rescue dog they called us a week later everything had been washed and reused the transport crate was long gone.  and it was an urban environment without a start article we can not tell the trailing dog what they are looking for.  If you are doing transport for a rescue it may be prudent to wipe a cotton swab on the animal and put it in a zip lock baggie.  The cost is pennies the time needed is seconds, with luck you will never need any of them. 

http://www.fredericknewspost.com/sections/archives/fnp_display.htm?StoryID=75023¤t=true 

A nice article by Kathy Ansell of The News Journal about recovering your lost pet.  she has some good pointers in the article for recovery and especially the value of a quick response to a missing pet. 

http://www.delawareonline.com/apps/pbcs.dll/article?AID=/20070202/ENG17/302020012/-1/NEWS01