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_23958917_1 (stacks VARCHAR, in_service_dates VARCHAR)

### Question ###
Name the stacks for 1 1969 2 1995

### Accurate SQL ###

SELECT stacks FROM table_23958917_1 WHERE in_service_dates = "1 1969 2 1995"