Where can I find pictures of "endplate"? Where can it possible to find pictures or drawings of "endplate"? (for "winglet" is much easier, but not endplate)

I'm asking what's written above, after I read the following text from Raymer and I need a better comprehension of it.


  The wing aspect ratio "$A$" is the geometric aspect ratio of the
  complete reference planform. the effective aspect ratio will be
  increased by wing endplates or winglets
  
  Endplate: $A_{effective} = A(1+1.9\frac{h}{b})$ - (12.10)   where $h$ = endplate height
  
  Winglet: $A_{effective} = \approx 1.2A$  -     (12.11)
  
  These effective aspect ratios should also be used in the induced drag
  calculations below. note that Eq. (12.11) for winglets is a crude
  approximation based upon limited data for wings of moderate aspect
  ratio


......................


  The extra drag due to non-elliptical lift distribution and the flow
  separation can be accounted for using e, the "Oswald span efficiency
  factor". This effectively reduces the aspect ratio, producing the
  following equation for $K$
  
  $K=\frac{1}{πAe}$ (12.48) 
  
  If the wing has end-plates or winglets, the effective aspect ratio
  from Eq. (12.10) or (12.11) should be used in Eq. (12.48)


(Source: Daniel P. Raymer "Aircraft design . A conceptual approach" , Chapter 12 Aerodynamics)
I seem to remember that wing end plates were sometimes used on Short Take Off and Landing(STOL) aircraft in the 1960's.

I found a few photos while doing an internet search but they seem to be much more prevalent on race car wings these days. 











Here is an explanation of why end plates are used on race cars: Analysis: Rear Wing Endplates


  The endplate has two functions, the primary reason for their shape is
  to control the wingtip vortices at the trailing edge of the wing as
  this reduces drag and also lift. The second reason is that they
  control how the airflow makes its way over, under or around the
  aerofoil device that is creating the downforce on the car, resulting
  in better airflow management and maximising the performance of the
  component.