Hap Hadley, artist
Unknown photographer
by 1922 <div style="display: none;">date QS:P,+1922-00-00T00:00:00Z/7,P1326,+1922-00-00T00:00:00Z/9</div>
<p>Charles L. Bartholomew (1922). <i>Chalk talk and crayon presentation; a handbook of practice and performance in pictorial expression of ideas</i>. Chicago: Frederick J. Drake and Co. 
</p>
<ul><li><a rel="nofollow" class="external free" href="https://archive.org/details/chalktalkcrayonp00bartiala">https://archive.org/details/chalktalkcrayonp00bartiala</a></li></ul>