I think that Heidi at 101cookbooks.com and her two books (Super Natural Everyday and one whose title I'm forgetting) are really great. She uses carbs, but good carbs. Lots of whole grains, lots of vegetables. And the recipes are DELICIOUS.

I think that Dr. Gourmet might be a very good resource. He has a website full of meal plans that are friendly to a variety of conditions, as well as a book entitled Just Tell Me What to Eat.
He was a chef before he became a Dr. and his recipes are really delicious. I've also attended some seminars he ran and he makes eating for good health really approachable and fun.

http://www.drgourmet.com/
http://www.amazon.com/Just-Tell-What-Eat-Weight-Loss/dp/0738215597/ref=sr_1_1?s=books&ie=UTF8&qid=1347914221&sr=1-1

Any cook book that is primal or paleo would be good for your Dad.

I'm a primal eater, and, if you decide to go that route, I found a couple of things when I first started:
1 - It's a good excuse to really learn how to cook a good steak or piece of fish. So any books that go in depth on that subject might be good.
2 - I didn't buy any new cookbooks when I switched over, I just modified the recipes I was already making. You'll find that most entree recipes actually don't include a lot of carbs, it's the sides you've got to watch out for (rice, bread, mashed potatoes).

I have Canada's 150 Best Diabetes Desserts (http://www.amazon.ca/Canadas-150-Best-Diabetes-Desserts/dp/0778802043) and anything I have made from it have been great. I've blogged a couple of recipes from this book, so if you want a preview, you can check them out here: http://foodforthoughtlinds.blogspot.ca/search?q=canada%27s+best+150+diabetes+desserts

I'd also recommend Canadian Diabetes Slow Cooker Recipes (http://www.amazon.ca/Canadian-Diabetes-Slow-Cooker-Recipes/dp/0778801721). I don't have this specific cookbook, but have several others by the same author and they are all fabulous.

I am loving Practical Paleo. There are meal plans geared for specific goals (athletic performance, reducing inflammation, fat loss, etc.) and I believe there's one that could be used by diabetics. Either way, most of these recipes are low-carb and rely on meat, fruit, and vegetables, the type of food that doesn't spike your blood sugar.

http://www.amazon.com/Dont-Have-Diabetic-Love-Cookbook/dp/B0042P59YG/ref=sr_1_32?s=books&ie=UTF8&qid=1347918424&sr=1-32&keywords=diabetic+cookbook

The author is chef diagnosed with diabetes.

Hmm.
That omits the American Diabetes Association Cookbooks- Have found some amazing recipes in those I've eye-balled. Seasonal, regional, etc.

Mark Bittman's "How to Cook Everything" and "HTCE Vegetarian". I'll go check for the nutritional info per recipe.... nope not in my editions. Can give new ideas for same proteins and new side dish options. He usually others several different cooking options from around the world. Might or might not appeal to your Dad.

Nechama Cohen's "Enlitened Kosher Cooking". As you would expect, no seafood or pork. Lots of shortcuts for healthy choices on festival staples, menus planned for major holidays, and so on. Does mention that word in the text of the book, but Drool-worthy photos and nutritional info for every recipe. The almond cookies, mock noodle kugel and the chicken are family favorites here- diabetic, pre-diabetic, or nothing yet.

Otherwise,
You want to find cookbooks which actually list the nutritional info on the same page as the recipe. Some publishers are better about this than others. Having the massive nutritional list in the back of the book annoys me. Calories and carb counts are useful. Watching portion sizes is very useful.
Since he is a cook, he might also need to use far less salt per dish. Daily allowance is 1/4 tsp/1400mg or less total.
Without a bit more effort on his part, not sure this will help him. "Ostrich disease"/denial folks are very resistant to change. Bottom line, kidneys, eyes, heart, legs, teeth, feet can all be changed for the worst permanently if he doesn't adapt. It's a balancing act, and few type 2's wish they had not adapted quicker before they did permanent damage.

I'd suggest a diabetic counselor to offer recipes and ideas, if he'd even accept that.
Get yourself into a diabetic family member forum and make the changes for yourself. You can offer innocuous new recipes to your Dad if nothing else. As a child of a Person With Diabetes, many folks are surprised at what my relative joyfully eats on a regular healthy basis. They do request the recipes.

Martha Rose Shulman's Mediterranean Harvest is a real winner. While there are recipes for breads, pastas and risottos included in the book, many of them are made with whole grains. The recipes are abundant with vegetables, herbs and beans. Eggs, nuts, olive oil and cheese are used in moderation throughout so flavor is never sacrificed! She does not include the nutritional info with her recipes, but she is definitely focused on keeping her foods tasty and healthy.
A good fish/seafood cookbook would also be good for your dad. Unfortunately, I don't have one to recommend off-hand.

This one is AMAZING : The French Culinary Institute's Salute to Healthy Cooking. It has the most amazing food (best and simplest asparagus soup in the world), that works both for me (paleo, cooking enthusiast) and my husband (diabetic). This would be one of my favorite books, even if we were not cooking diabetic friendly.

Also consider "The Low Carb Gourmet" by award winning Canadian chef Karen Barnaby. I use the Flavor Bible at least 2x a week also.

I absolutely love Sally Schneider's A New Way to Cook.

I would recommend Fish Without a Doubt by Rick Moonen and Roy Finamore. It was a Gourmet Cook Book Club selection.

The recipes in my book "Delicious Dishes for Diabetics--a mediterranean way of eating" are there for everyone to enjoy. That's the point. You don't have to feel deprived as a diabetic.My wife is not diabetic and eats as I do. The book is a paperback and available on amazon. I have just been commissioned to do a second book. robin-ellis.net is my blog.