Following Tamar's question and your helpful answers, I have a question which has come up in my research on the history of a legal journal printed in London from 1894 to 1951, and distributed around the world (and particularly in the British Empire):
How did book post from Britain to the Empire and beyond work? More specifically:
1) Was book post as fast as regular letter post? Postal histories talk about the time it took for letters to get from Britain to India, for instance. Would copies of a journal have travelled have quickly?