The turbulent years between 1775 and 1783 were a time of great trial and disturbance among newspapers. Interruption, suppression, and lack of support checked their growth substantially. Although there were forty-three newspapers in the United States when the treaty of peace was signed (1783), as compared with thirty-seven on the date of the battle of Lexington (1775), only a dozen remained in continuous operation between the two events, and most of those had experienced delays and difficulties through lack of paper, type, and patronage. Not one newspaper in the principal cities, Boston, New York, and Philadelphia, continued publication throughout the war. When the colonial forces were in possession, royalist papers were suppressed, and at times of British occupation, revolutionary papers moved away, or were discontinued, or they became royalist, only to suffer at the next turn of military fortunes. Thus there was an exodus of papers from the cities along the coast to smaller inland places, where alone it was possible for them to continue without interruption. Scarcity of paper was acute; type worn out could not be replaced. The appearance of the newspapers deteriorated, and issues sometimes failed to appear at all. Mail service, never good, was poorer than ever; foreign newspapers, an important source of information, could be obtained but rarely; many of the ablest writers who had filled the columns with dissertations upon colonial rights and government were now otherwise occupied.