An actual treasure trove for those interested in modernism, like me!!! This site has collated 15 literary journals from the early 20th centuary online including the English Review and Blast. After reading about these seminal publications whilst researching the modernist movement, to be able to read them online in colour and as they would have looked is really exciting. Especially since you can see the adverts and other conventions of early 20thc printing, its interesting from an historical point of view as well as a literary one too. Its also interesting to note how, even after all these years, the artwork and design of these publications still seem modern and exciting. Note the bright pink cover of Blast!
Link here: http://dl.lib.brown.edu/mjp/journals.html