It might help to know for what you need such a list.
Anyway, GLLoad has header files for different OpenGL versions (http://glsdk.sourceforge.net/docs/html/group__module__glload.html), the oldest is 2.1 but there are individual headers for all functions that were added each version (e.g. _int_gl_1_3.h), maybe this will help assembling a list of GL 1.3 functions.
OpenGL 1.3 would be all the entry points from the GL_VERSION_1_2/GL_VERSION_1_2_DEPRECATED/GL_VERSION_1_3/GL_VERSION_1_3_DEPRECATED sections + the functions from gl/gl.h