National Cartographic Information Center (Continued) 
with direct access to NCIC information through 
their public service facilities; thus, many 
government and private organizations are 
cooperating with the USGS in forming a network 
of NCIC facilities. 
The USGS and the National Oceanic and 
Atmospheric Administration are the principal 
affiliates in the network. 
NCIC provides different levels of service 
for the various types of cartographic data. For 
general-purpose data-topographic maps and aerial 
photographs, the objective is to provide com- 
plete service, including the identification of 
specific products and assistance in ordering 
these products. On the other hand, only general 
information and referral service are provided 
for special-purpose cartographic data. The 
types of cartographic data for which NCIC offers 
assistance are listed below: 
Multiuse maps and charts including: 
Aeronautical charts Nautical charts 
Bathymetric maps Orthophotomaps and 
City maps orthophotoquads 
Extraterrestrial maps River surveys and 
Floodplain maps damsite maps 
Forest maps Slope maps 
Geologic maps Soil maps 
Highway maps Topographic maps 
Land-use maps US maps 
Map and chart feature World maps 
separates 
Survey data including: 
First- and second-order control from any 
source 
Third-order control from any source that is 
useful 
Selected fourth-order control 
Photogrammetrically derived control 
Selected private control 
Land plats 
Census subdivisions 
VII-17 
