Traditionally, it has been taken for granted that the “DL” 24 “Calquin” (“Royal Eagle”) is a derivative, a copy or was developed with inspiration drawn from the famous British DH 94 “Mosquito” airplane, and also that the Calquin was originally designed to be equipped with the Rolls Royce Merlin in-line engines, that the British airplane had. Not so much, and not so little. As we will see later, there are