This function imports dictionaries for all possible FRED
series.  You can us this data to find series to search in the
fred_symbols function.
dictionary_fred_ids(fred_file = NULL, return_message = TRUE)
| fred_file | the type of dictionary you wish to import 
  | 
    
|---|---|
| return_message | 
  | 
    
a tibble
This dictionary was indexed on January 22, 2017, please be aware that there may be new series added to FRED since then.
Other dictionary: 
dictionary_sec_filing_codes(),
dictionary_sec_form_codes(),
dictionary_sic_codes(),
location_codes(),
sec_rules(),
sic_naics_codes()
dictionary_fred_ids(fred_file = NULL, return_message = TRUE)