Art and culture connoisseurs carried a Blue Guide, and high fliers relied on Michelin Guides to steer them to Europe's notable hotels and chefs.

According to The Blue Guide to New York. . . . Martha: The what?

A 1917 agreement with French publisher Hachette allowed co-publication in English and French of guidebooks under the names Blue Guides and Guides Bleus, respectively.

In 1982, W.W. Norton of New York became the United States co-publisher, selling all Blue Guides in that country.

After the First World War, Findlay launched his own series of the famous Blue Guides, published in London by Ernest Benn.

Blanchard, Paul, 1990: Southern Italy from Rome to Calabria: The Blue Guides, 7th edn., p.345.

His Blue Guides book on Greece was highly praised and as a result he was elected a Fellow of the Royal Geographical Society.

The arduous task of locating such relevant information is what led Rossiter and John Flower, working through the renowned Blue Guides, to propose a Stamp Atlas, which was finally completed after his death in 1982.

She wrote the National Geographic Traveler Madrid guidebook as well as Blue Guides to Madrid and Barcelona.

There is no volume on Crete, because there is already a Blue Guide to Crete; and Corfu and the Ionian Islands, to the east of mainland Greece, will have to wait for another day.