r • f ‘-> *•, .. A :> • 
< K> 
, 4 .... 
576. The "laboratory". 
Camp at Tres Zapotes, Veracruz, 
April 2, 1939. 
578. The Stirlings and 
the Weiants start on a Sunday 
excursion. Camp at Tres 
Zapotes, Veracruz. April 2, 
1939. 
fey-* i*'. '• 
r 
•S; 
nt 
577. Matthew and Marion Stirling. 
In camp at Tres Zapotes, Veracruz. 
April 2, 1939. 
