Here's something neat, reports from the National Board of Fire Underwriters on a number of North Carolina cities. These are highly detailed reports that examine all aspects of a city's fire protection capability, and with detailed analysis of the fire departments. Apparatus, equipment, working hours, command structure, mutual aid, you name it. The reports also include information on the fire alarm system and water supply (though my copies largely omit the latter, sorry).
For my historian readers, do you have a report that I don't have? Please share!
View the reports, which are PDF.