This is a very attractively produced book, as the title suggests it covers 50 architects, with a bias towards recent architects. From the evidence in this book, Le Corbusier generously gave his glasses to Philip Johnson, only to have IM Pei go and nick them.
Each architect gets at least a couple of pages, with text, photos and a timeline to place them in context.
I don't know enough to query who is in and who is out, there are a few names I don't recognise, but I probably ought to, and off the top of my head it seems odd not to include Ove Arup practice, John Lautner, and Charles Rennie Mackintosh, but these are minor quibbles.
Unfortunately after favourable first impressions, actually attempting to read the book is an underwhelming and exasperating experience, the text really needs a decent edit, or authors that can write with clarity of thought and expression.
Of Karl Friedrich Schinkel it says
"His career proceeded rapidly; as early as 1815, in his mid-1930s (sic), he was appointed chief building advisor and was given important commissions, including the construction of a guardhouse for the royal palace."
Persevere past the badly written sections on the earlier architects though and the text is actually pretty well written and informative. For the twentieth century onwards this is readable and entertaining, and would merit five stars, it is let down by the badly written earlier sections.