Mr.wormey's board-to-board with ART
You could start checking out the profiles for Kaga-han on this site for an overview (Kanazawa Castle & bukeyashiki profiles). When making new profiles I usually reference Japanese (language) castle bloggers; for profiles made in the last few years you'll find the original sources in the bottom portion of the right-hand segment (desktop). These websites probably also have coverage in Ishikawa if you'd like to check. Websites like 城郭放浪記, 余湖コレクション, 城郭探訪, and so on. By the way, if you have FB, feel free to join us on there.
Thanks, ART. BTW, that's some awesome content you've added to the site. Would you mind letting me know where you source the information? I'm thinking of starting to research Kaga Han and the Maeda clan, beginning with Kanazawa, and any sources to start with would be great.