Though this book is structured around a literary contrivance; that of a dinner party with diverse invitees, it provides a lot of useful information shedding light on how many different character traits show up in peoples' handwriting, as well as numerous samples depicting the different ways in which the handwriting traits discussed play out in writers of different ages and backgrounds.
Though several things, such as the description of some of the dinner party fare, render this book dated, it is safe to say that the author's decision to stay away from examples of celebrities' handwriting, on the grounds using well-known personages as examples detracts form the mission of illustrating the emotional states and personality traits depicted in the handwriting samples, makes it less overtly dated than some other books of this kind.
I recommend a careful reading of the front matter, as the writer credibly and carefully links the practice of graphology to the science(?) of mainstream, Establishment-accepted psychology.