holly brewer teaches history at the university of maryland. thank you for being with us. ms. brewer: you are welcome. nice to meet you. announcer: you're watching american history tv. all weekend every weekend on history tv. , american h week history tv's reel america gives you archival films that provide publict for affairs issues. ♪ [sneezing] narrator: the symptoms are familiar. very likely will come up with a correct diagnosis. yes, it looks like a common cold. running nose, headache, a guinness, fever. those are some of the symptoms of the common cold. how do we get into that unhappy state? do we have colds simply because of colds, because of ice, snow and low temperature? no. funny thing about colds? , where it is coldest, the inhabitants likely never get colds. eskimos are called-free, unless they come into contact with visitors outside their frozen world. if it is not just cold weather, what is it that causes so many of us to catch cold? scientists think most colds are caused by extremely small .icroorganisms called viruses viruses, and there are many different kinds

holly brewer, thank you for being with us. ms. brewer: you are welcome. nice to meet you. ♪ ♪ announcer: next on the presidency, abraham lincoln revisitsarold holzer the second inaugural or addressed -- second inaugural address delivered six weeks before his assassination and generally considered to be one of the most iconic speeches in american history. the new york historical society hosted the event. welcomee honored to harold holzer back. he is the director of the roosevelt house policy institute at hunter college. he previously served as chairman of the abraham lincoln foundation and cochair of the u.s. lincoln bicentennial commission, appointed by presidenll

holly brewer, thank you for being with us. ms. brewer: you are welcome. nice to meet you. ♪ ♪ announcer: next on the presidency, abraham lincoln scholar harold holzer revisits the 16th president's second inaugural address delivered six -- on march 4, 1865, just six weeks before his assassination and generally considered to be one of the most iconic speeches in american history. the new york historical society hosted the event. >> we are honored to welcome harold holzer back.

holly brewer teaches history at the university of maryland. thank you for being with us. ms. er: you are welcome. nice to meet you. announcer: you're watching american history tv. all weekend every weekend on history tv. , american h week history tv's reel america gives yoar