1: One may be a very long time (3)
2: A chair may be material (5)
3: Green coat for Italian composer and Spanish painter (9)
4: Choose to take the top off (3)
5: A supporter starting to mock President Garfield's middle name (5)
8: Third stack of paper rises to the top. (5)
9: Spanish wine from a city in Brazil getting German approval (5)
11: Prohibit an attorney's organization (3)
13: Ran into a section of the time-table (3)