Jack: This newspaper article from the Salisbury Times in August 1939 describes how the move of the factory equipment (from Buffalo to Salisbury) caused a three month break in production. I have only included the first section of the article where they state that they expect to resume production (in three months) at 700 pumps a month. That production rate - when annualized - is fully in line with the numbers you provided above.

Thanks.

Andy

M&S Relocation  Aug 1939.jpg