Letters of Charles Babbage, Dr Edward Bancroft, Sir Joseph Banks, H Boerhaave, Sir B Brodie, Joshua Brookes and W Brouncker, 1677-1844 and undated.

Letters of Charles Babbage, Dr Edward Bancroft, Sir Joseph Banks, H Boerhaave, Sir B Brodie, Joshua Brookes and W Brouncker, 1677-1844 and undated.