Molly Murdock, Trevor Nelson, and Ben Parcell have put up an exceptionally interesting website that organizes concepts of music theory that are often studied. The concepts link to scores, audio files, and downloadable PDF files. There is also a pop-up page for each concept that cross-references other music theory concepts that are in the piece. All the examples of music theory concepts are from music written by women.
It is beautifully organized, but it is only in the beginning stages of a work in progress. The list of composers they draw from is pretty much limited to the "usual suspects" from the common practice era. The 20th and 21st century sections are still empty, so examples of modal, pentatonic, octatonic, whole tone, and twelve-tone scales are missing.
(Note to the organizers of this website: you might like to look around this blog to find information about women composers with music in the IMSLP who use the elements you would like to illustrate.)