a story from wbal which uses "missing child" angle to talk about the
planned increase to 150 cameras by september:

www.officer.com/article/article.jsp

another article from wbal in which we find out that each camera costs
$300,000(this time with a picture):

www.thewbalchannel.com/news/4538046/detail.html

here's city paper:

www.citypaper.com/news/story.asp

Baltimore is in the process of installing 80 security cameras in three
of the most violent areas of the city in the hope of deterring
crime. By May 31, approximately 24 cameras will be placed along East
Monument Street, 24 will be placed in Park Heights, and 32 will be
placed along Greenmount Avenue in Waverly. The cameras will perch on
13-foot-long rods extending from light poles, and they will have the
ability to pan, zoom, and tilt to observe activity on the street. Live
surveillance of the cameras? footage will take place at a center
nearby. Trained individuals, including retired police officers, will
monitor the feed and will have a direct line to the Baltimore Police
Department when they view suspicious conduct.