Microfilm | Buy
The National Archives (NARA) allows you to purchase digitized rolls of over 3,000 series of federal records if you have the publication and roll numbers.
Depending on your needs, you can purchase pre-recorded content or raw archival supplies:
For raw 16mm or 35mm film and processing chemicals, suppliers like The Microfilm Shop and Micrographics Data provide industry-standard replacements for discontinued lines.
Not all microfilm is created equal. The type you buy should match your preservation goals: Buying Microfilm - National Archives