Expats.cz
Emergency numbers.
http://www.expats.cz/cgi-bin/go.cgi?contacts

Hotels in Prague
Contains the telephone numbers of the city's emergency services.
http://www.hotels-in-prague.cz/info/emerc.html

Jason Cholt.com
Telephone numbers of the lost and found office in Prague, as well as of the major credit card companies.
http://www.jasoncholt.com/prague/prahainfo.html#2

Prague Experience
Emergency telephone numbers and other essentials.
http://www.pragueexperience.com/information/tourist_information.htm

ZZSHMP.cz
Tips on calling the 155 emergency number.
http://www.zzshmp.cz/eversion/ejakvolat.html