I'm OK with a more strict definition of Pulp as the genres of cheap magazines of the 1914 to 1945 period, along with early great comic strips like Terry and the Pirates. However, I can't help but think of HG Wells, Jules Verne, Joseph Conrad, H Ryder Haggard, and some other late Victorian and Edwardian writers as being at least "proto-pulp" because they helped create a demand for the type of stories that launched the Pulp era. Not sure if Pulp would have happened without these and other pioneers of adventure literature.