The site mentioned (FORDYCE) is a great locator for frequencies, but they are not always up to date. It is a try and find out if it is a resent frequency or an old one. I used then to sent up my scanner and worked off of it to find newer updates. I even made calls to the group even police stations and explained that I was a scanner buff and would like their frequence and 9 out 10 times they gave them to me. I have stopped into many police stations and asked and only a very few said no. However, they don't give out their so called private frequencies.
Good luck