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_85 (production_num INTEGER, series VARCHAR, title VARCHAR)

### Question ###
What is the smallest production number for the LT series with the Dumb Patrol title?

### Accurate SQL ###

SELECT MIN(production_num) FROM table_name_85 WHERE series = "lt" AND title = "dumb patrol"