Send an email to printing@boxcarpress.com. If the file is too large try using yousendit.com. (Boxcar Press can accept up to 25MB via email but your email capacity may not allow a file that large to be sent.) Before you send, make sure you have outlined your type, included actual crop marks or a cut rule and that your files are set in solid, uncoated Pantone colors.
Posted in: Commercial Printing, Designing for Letterpress