Mathematics Organizations:   

• Pi Mu Epsilon - Illinois Kappa
• The Mathematical Association of America 
• The American Mathematical Society
• The National Council of Teachers of Mathematics 
• The Society for Industrial and Applied Mathematics

History of Mathematics : 

• British Society for the History of Mathematics 
• Société Canadienne d'Histoire et de Philosophie des Mathématiques 
• Convergence                               
• Byrne's 1847 Edition of Euclid 
• Ethnomathematics            

 Theoretical Computer Science & Linguistics:   

• European Association for Theoretical Computer Science
• ACM-SIGACT   
• Association for Computational Linguistics  
• Linguistic Society of America 
• European Association for Machine Translation