heraldry resource books freely available on the internet with archive.org ...

https://archive.org/details/cu31924029796608/mode/2up?view=theater

https://archive.org/details/gri_33125008889319/mode/2up?view=theater

https://archive.org/details/gri_33125008889384/mode/2up?view=theater

this volume has a good index of translated mottos ...

https://archive.org/details/fairbairnsbookof01fair/page/n5/mode/2up?view=theater

and this has all the samples, examples, pictures ...

https://archive.org/details/fairbairnsbookof02fair/page/n3/mode/2up?view=theater

loads of detail here ...

https://archive.org/details/artofheraldryenc00foxd/mode/2up?view=theater