1. Catenary Cable a Civil Engineering Project  
   Jacob Peña, Civil Engineering Dept., University of Texas, Austin, TX  
2. St. Louis Arch: Catenary Curve Equation  
   National Park Service, Jefferson National Memorial, St. Louis, MO  
3. Hanging With Galileo  
   Paul Edward Xavier Kunkel, Aberdeen, Washington  
4. Catenary  
   School of Mathematics and Statistics, University of St. Andrews, Scotland  
5. Problem of the Minimum Rotation-Surface applet
   Ivanov A.G., Chelyabinsk State University, Chelyabinsk, Russia
6. An Example: The Length of a Suspended Cable  
   Interactive Learning in Calculus, Math. Dept., Indiana Univ. of Pennsylvania, Indiana, PA
7. Suspension  Bridges  
   Derek Locke, Gloucester, UK  
8. Arch      
   Department of Mathematics, Rose-Hulman Institute of Technology, Terre Haute, IN       
9. Brachistochrone Problem     
   Eric W. Weisstein, Dynamical Sysmems Dept., Institute of Math., UrB, RAS   
10. Suspension bridges  
    Masoud Yazdani, University of the West of England, Frenchay Campus, Bristol, UK  
11. Brachistochrone  
    Institute and Museum of the History of Science of Florence, Italy    
12. Visualizing the Brachistochrone Problem  
    Robert Root, Mathematica Notebook, Wolfram, Research, Inc.  
13. Brachistochrone  
    Andreas Schreiber,  Institut für Mathematik der TUC, Clausthal-Zellerfeld, DE  
14. The Brachistochrone  
    Glenn J. Fox, Dept. of Math. and Computer Science, Emory University, Atlanta, GA  
15. Brachistochrone Problem  
    Robert Vanderbei,Applied and Computational Mathematics, Princeton University, Princeton, NJ  
16. The Roller Coaster or Brachistochrone Problem  
    Eric Hiob, Math. Dept., British Columbia Institute of Technology, Burnaby, Canada  
17. Revisiting A Classic Least Time Problem  
    Ben Szapiro, Dept. of Physics, The University of the South, Sewanee, TN  
18. Brachistochrone  
    Richard M. Hoskins, Physics Dept., Univ. of South Carolins, Columbia, SC  
19. Uniform Cable and Catenary Curve applet  
    Robert Balogh-Robinson, Physics Dept., Marist College, Poughkeepsie, NY  
20. Catenary Arch  
    Exploratorium, San Francisco, CA  
21. An amusing property of the Catenary (Java animation)  
    The Living Mathematics Project, Math, Dept., University of British Columbia  

(c) John H. Mathews 2003