Burke's Flexo-Lures

I need a little help here guys and gals...
i have found in my grandfathers tackle box, a box of burkes flexo lure flies... the box is in pretty good shape for its age. but the bugs are near perfect. has the original foam and card board in the lid. on the other side the sticker says cat# fr104, fly rod kit, quan. 1 kit...
my problem is there are 17 bugs in the box i would like to know how many should be in there and possibly the correct ones for the kit. any info you may have would would help alot. i know they are from traverse city, MI. im guessing by what i see on google searches they were made in the 1950's give or take. thanks in advance for anything you may know!
Gary