Erica _ Fischer:
The 78,800 mile system. This is the largest system investigated by the committee (1944)
Erica _ Fischer:
The 48,300 mile system, consisting of the more important routes of the 78,800 mile system (1944)
Erica _ Fischer:
The 29,300 mile system investigated by the Public Roads Administration as an interregional system and described in Public Roads (1944)
Erica _ Fischer:
The 26,700 mile system tentatively proposed as an interregional highway system by the Public Roads Administration in the report, Toll Roads and Free Roads (1944)
Erica _ Fischer:
The 14,300 mile system investigated by the Public Roads Administration in connection with the report, Toll Roads and Free Roads (1944)
Erica _ Fischer:
Map of the recommended interregional system, showing the location of advance engineering projects approved (1944)
Erica _ Fischer:
Sections of existing roads conforming approximately to the recommended interregional system (1944)
Erica _ Fischer:
Classes of surface improvements on existing roads, corresponding approximately to routes of the recommended interregional system (1944)
Erica _ Fischer:
The 36,000 mile additional system investigated by the committee (1944)
Erica _ Fischer:
Relief traffic map of the recommended interregional system (1944)
Erica _ Fischer:
The recommended interregional system in relation to principal topographic features of the United States (1944)
Erica _ Fischer:
The recommended interregional system in relation to industrial sites served by roads improved by access road projects (1944)
Erica _ Fischer:
The recommended interregional system in relation to places of early concentration of primary war industry (1944)
Erica _ Fischer:
The recommended interregional system in relation to the location of principal miltary and naval establishments (1944)
Erica _ Fischer:
The recommended interregional system in relation to the strategic network of principal traffic routes of military importance (1944)
Erica _ Fischer:
The recommended interregional system in relation to centers at which the war has caused significant increase in employment (1944)
Erica _ Fischer:
The recommended interregional system in relation to density of motor-vehicle ownership per square mile (1944)
Erica _ Fischer:
The recommended interregional system in relation to concentrations of motor-vehicle ownership in cities of more than 10,000 population (1944)
Erica _ Fischer:
The general types of farm production in areas traversed by the recommended interregional system (1944)
Erica _ Fischer:
The recommended interregional system in relation to the value of farm products (1944)
Erica _ Fischer:
The recommended interregional system in relation to cities of various degrees of manufacturing importance (1944)
Erica _ Fischer:
The recommended interregional system in relation to the density of rural population distribution in the United States (1944)
Erica _ Fischer:
The recommended interregional system in relation to the distribution of the whole population of the United States (1944)
Erica _ Fischer:
The recommended interregional system in relation to the location of principal metropolitan areas, as defined by the Bureau of the Census (1944)
Erica _ Fischer:
The recommended interregional system in relation to the location of cities of various population groups (1944)
Erica _ Fischer:
The general location of routes of the recommended interregional highway system (1944)