The relationship between the level of domestic demand in Britain an dthe exports of the British motor car industry

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Annual report.

1917-1928 called [no.] 1-12.

Hudson automobile assembly

Men lowering frame of automobile. On verso: 1934. Published in Robert Crudin's "Many and One: A Social History of the United States," New York, Prentice Hall, 1980

Ford Motor Co. Rouge Plant

Slogan on building: Safety is everybody's business

Howard Coffin with steamer car

On verso: 1899-1900 -- Steam car built by Howard Coffin while in College at U. of M. (Ann Arbor) modeled on lines of Locomotive steamer but with larger boiler and Engines (2 cyl.). Please return to Mr. H. E. Coffin. Hudson Motor Car Co., Detroit, Mich.

Ions in motor vehicle exhaust and their dispersion near busy roads

Measurements in the exhaust plume of a petrol-driven motor car showed that molecular cluster ions of both signs were present in approximately equal amounts. The emission rate increased sharply with engine speed while the charge symmetry remained unchanged. Measurements at the kerbside of nine motorways and five city roads showed that the mean total cluster ion concentration near city roads (603 cm-3) was about one-half of that near motorways (1211 cm-3) and about twice as high as that in the urban background (269 cm-3). Both positive and negative ion concentrations near a motorway showed a significant linear increase with traffic density (R2=0.3 at p<0.05) and correlated well with each other in real time (R2=0.87 at p<0.01). Heavy duty diesel vehicles comprised the main source of ions near busy roads. Measurements were conducted as a function of downwind distance from two motorways carrying around 120-150 vehicles per minute. Total traffic-related cluster ion concentrations decreased rapidly with distance, falling by one-half from the closest approach of 2m to 5m of the kerb. Measured concentrations decreased to background at about 15m from the kerb when the wind speed was 1.3 m s-1, this distance being greater at higher wind speed. The number and net charge concentrations of aerosol particles were also measured. Unlike particles that were carried downwind to distances of a few hundred metres, cluster ions emitted by motor vehicles were not present at more than a few tens of metres from the road.

Polk's Detroit city directory.

1876/77 not included in numbering.