Classic Mac (Motorola 68000) programming
This site has some useful info about programming with Retro68:
More info about Retro68:
http://www.toughdev.com/content/2017/03/exploring-retro68-gcc-based-sdk-for-68k-macintoshes/
Coding for vintage macs
http://code68k.extropicstudios.com/
Inside Macintosh
http://mirror.informatimago.com/next/developer.apple.com/documentation/mac/Toolbox/Toolbox-124.html
Mac Almanac II - Lots of global variables in the Mac ROM http://www.mac.linux-m68k.org/devel/macalmanac.php
Books https://commodore.bombjack.org/mac/mac-books.htm
Mac programming library https://vintageapple.org/macprogramming/
According to this thread: autc04/Retro68#98 it should be possible to save a rsrc file as MacBinary and include it in the application, by using the --copy command