Why do (some) teams dance at dawn on May Day? 

 -  2021. 
 - p. 12-17 : 
<br/><br/> Periodical article. 
<br/><br/> Various people answering a question posed by George Frampton. 
<br/><br/><label>In:</label>  Morris matters  , 40 no. 1 (January 2021), p. 12-17