Everything works great with the lookup with the exception of searching for an LCCN number. To test this, I went online to the LIbrary of Congress, got an LCCN from their records, loaded it into the lookup and I get a message saying "Nothing found for LCCN =".
It seems like it's not carrying over the entry of the lccn into the search since if it can't find something for the ISBN the message says "Nothing found for ISBN = 3033489044".
Thanks,
Nathan