"THERE IS MORE UNKNOWN THAN KNOWN," SAYS THE 

 SCIENTIST, "BUT THERE IS MUCH KNOWN THAT IS UN- 

 KNOWN BY MANY," SAYS THE INFORMATION SERVICE. 



Knowledge is often hidden and must be sought' 

 in strange places. Without a key to the sources 

 of knowledge, the seeker searches in vain. 



RESEARCH 



INFORMATION 



SERVICE 



SPECIALIZES IN SOURCES 



Its aim is to aid research workers everywhere; to refer the 

 worker to the source when available, when not, to bring the 

 source to the inquirer by letter, abstract, or photostat. From 

 its vantage point of location and organization it has unusual 

 access to international as well as national information. 



Its aim is to aid. Its ambition is "wider usefulness. 



THE RESOURCES OF THE SERVICE ARE AT THE DISPOSAL 

 OF THOSE WHO ARE INTERESTED IN THE INCREASE OF 

 KNOWLEDGE AND THE FURTHERANCE* OF RESEARCH IN 

 THE NATURAL SCIENCES AND THEIR TECHNOLOGIES. 



RESEARCH INFORMATION SERVICE 



NATIONAL RESEARCHTCOUNCIL 



WASHINGTON, D. C. 



