PREFACE 



With the publication of this bibliography of the liter- 

 ature of electron microscopy for the years 1956 through 1961, 

 The New York Society of Electron Microscopists (NYSEM) com- 

 pletes the reediting of references for these years previously 

 issued on edge-notched cards and terminates its bibliographic 

 activities. 



In 1952 when the International Bibliography of Electron 

 Microscopy (IBEM) was established, electron microscopists 

 were particularly concerned with instrumentation and the 

 techniques of specimen preparation. The mission of the IBEM 

 was to aid in the dissemination of advances in these funda- 

 mental areas. The general and successful use of these de- 

 velopments in recent years has overwhelmed the IBEM with 

 published findings. This is evidenced by the trebling of 

 the size of this volume over the previous one for the years 

 1950-1955. Increasing difficulty in effectively collecting 

 references and the impossibility of economically expanding 

 the facilities used for the publication of sets of edge- 

 notched cards to handle a still greater volume of references 

 led to a review of the problem and then to the decision to 

 cease publication. 



We are grateful to the following individuals and in- 

 stitutions for their cooperation in the preparation of the 

 IBEM: Thomas P. Fleming, Librarian of the College of 

 Physicians and Surgeons, Columbia University, and members 

 of his staff, notably Eva H. Eckert, who conducted an in- 

 tensive search for references; Esther Judkins, Librarian of 

 The Rockefeller Institute and members of her staff; and the 

 Institut ftlr Elektronen Mikroskopie, Dtisseldorf, West Germany, 

 which regularly contributed references to the IBEM. 



We are also indebted to the thousands of electron 

 microscopists who have graciously responded to our requests 

 for reprints. These reprints have helped to assure the ac- 

 curacy of references and subject analyses. 



We have been fortunate in receiving support from 

 several sources: initially from the Lillia Babbitt Hyde 

 Foundation, and subsequently from Philips Electronics, Inc., 

 the Radio Corporation of America, Siemens New York, Inc., 

 and the U. S. Public Health Service (Grant C-2725) . 



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