Hi,

> Even if early 1900's is a better reference date, why did it take until the
> 1940's for American bees to become so infected that AFB was threatening
the
> existence of beekeeping in the US?

After reading through Wedmore, Philips, and others, during the thirties and
forties is when cell size was increased larger and became common place. Just
an interesting note. Comments?

Clay