The first three of my Capitol Kiddie records. 10 inch sets 1947-1948. I admire these quite a bit, but am planning to get rid of them – can’t collect everything. I get the dates from the inside information, much of which is quite beautiful.
Of course, the real expert on kiddie 78s is http://www.kiddierekordking.com and I recommend you look at that site if you are interested in such things.