The British Pathé has recently uploaded their film archive to Youtube. Among these films are about 200 or so short videos about building fires, fire fighting measures and even fire research. The films were recorded between 1896 and 1973. The digitization was performed in 2002 using finances from a National Lottery grant (see the telegraph article for more details here on their project) . The catalog can be searched here. Some selected videos though are provided below which are worth a look:
Above are three early promotional videos of fire research. Most of the British fire research station.
The crystal palace fire can also be seen from video archives.
Empire state building fire from the 1960s.