I found my flyer in the Rhodes train station. You have to have completed all quests for Algernon first, then the flyer will become available. Not sure how long it takes, but I didn't happen upon the flyer by chance until long after I completed all missions with him. In real time, with nightly play that lasted no less than four to six hours, I found the flyer about five to seven days after my time with Algernon was over. It's called "Rare Orchids Order". Get that note in your possession, go pick orchids, go to any train station and mail them. It then says to come back in six hours, if I recall correctly.
