The R naming convention does not allow spaces and dashes in naming objects and variable names. Spaces in filenames will automatically be converted to underscores. 

Attempting to read in a file with dashes will elicit an "Error: Unexpected input in ..." message.  A workaround is to use the grave accent (``) in the same way we use quotes ("") for directories with spaces in the name. 

e.g. head(`lcs-2008-2009-v1`) as opposed to head(lcs-2008-2009-v1).