Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_20 (years VARCHAR, state VARCHAR, lifespan VARCHAR)

### Question ###
What years did the Representative from Iowa with a lifespan of 1880–1942 serve?

### Accurate SQL ###

SELECT years FROM table_name_20 WHERE state = "iowa" AND lifespan = "1880–1942"