House of Doolittle Refill for our Reminder Wall Calendar (#HOD13502 black vinyl holder) 16 Months September 2011 to December 2012. Other Academic products for the teacher or student from House of Doolittle includes desk pads, wall calendars, lesson planners, class record books, assignment books, monthly appointment planners and weekly appointment planners. Go GREEN with House of Doolittle products, we use 100% recycled paper containing 100% post-consumer waste with soy inks. All of our products are manufactured right here in the USA. Since 1989 House of Doolittle has donated 5% of its profits to organizations that are working to create a more sustainable environment.