As the owner of a period home, I tend to review every kitchen through the lens of 'will this look out of place in this home in forty years'. As I currently am living with an obviously 70s remodel that is utterly out of place in the rest of the home, I want to attempt to keep whatever I do to improve that from making someone in the future say 'I'm living with an obviously 2011 remodel that is utterly out of place...'!
I feel most of the kitchen books out there assume you have more money for your project than you do. Lemos suggests using no more than 10% of the homes value for a kitchen project and then continues to go on to say that most of the remodels in the book were around $30,000 - $50,000... which is more than that recommended 10% for many of us!
That said, I did find this book very useful. There are a wide variety of kitchens, including some from older homes. While there were aesthetic decisions recommended that I would not make based on some of my other readings on period kitchens, there were a number of suggestions for storage and cabinets that I feel will be useful.
Overall this is a good idea book, to get you thinking about how you might want to prioritize.
However if you're dealing with an early 20th century home as I am, I would recommend The New Bungalow Kitchen by Peter Labau, or Bungalow Kitchens by Jane Powell as essential reading. The former takes a more contemporary approach, the latter a more preservationist approach, but even if you do not take that route yourself, having an understanding of the kitchens of that time will certainly be useful.