From The Queen Breeder, 1921 Postmarked Cover, Bellevue Ohio

I am not sure if this envelope once contained a queen bee  in a small queen bee box or just some correspondence, but what en envelop! A little research seems to indicate that H.G Quirin was at it breeding queens for quite a long time, with a notation (of an advertisement in a bee keeping journal) as early as 1861,  but with this envelop postmarked 1921! (I think perhaps the the former notation is incorrect, but who knows?) The envelop itself looks c. 1880s-90s to me, a rare and excellent thing! 

6 1/2" x 3 5/8" and in good condition, with general wear.