Earl Mickel Earl Mickel has been a driving force behind the rise of custom turkey callmaking as an important art form. According to the National Wild Turkey Federation, "As the popularity of turkey hunting increased, so did the interest in collecting cals, and Earl was right there, speaking and writing about it so that future generations will know . . . those who contributed." Mickel also wrote Callmakers Past and Present and Turkey Callmakers Past and Present: The Rest of the Best. Read More Read Less