I find that most of the good dealers who sell Christmas also have Easter. I find Easter in the same sources as Christmas, such as flea markets, auctions, dealers, etc. I have found some great Easter items room hopping at the Golden Glow Conventions.
Was it a hard collection to build?
Like anything it takes time. I have been collecting all holidays for around 20 years. My largest is Christmas followed by Halloween, Easter than Thanksgiving and Valentines Day.