This book apparently covers some early tourist reports:
www.worldofbooks.com
But Hutton's and other write ups can be found at:
Book I mentioned above:

The Discovery of the Yorkshire Dales
THE YORKSHIRE DALES, so beloved of visitors today, was once remote, wild and undiscovered, invaded by settlers who left their stories in scars on the land and hints of their origins in the place names that remain. As the written word developed, a gradual trickle of explorers came to view the...
But Hutton's and other write ups can be found at:
Old Cumbria Gazetteer - frameset
lakesguides.co.uk
Book I mentioned above:
The Complete English Traveller
books.google.co.uk