catfish and waffles

C and W is well documented as a popular vacation food for 18th and
19th century Philadelphians traveling out into the country along
Wissahickon Creek.  What isn't well documented is waht it WAS:  fried,
creamed, grilled fish?  on the waffles? next to them? as a separate
course?

I promised to research this for a lecture series about the
Wissahickon, so actual references would be useful, but not essential. 
Really, any info would be welcome.  THANKS!