Hi, I thought I had responded to your other message, but maybe the system lost my response. I actually haven't done much research on Marco Polo. There is a section on novels about him at my website
www.HistoricalNovels.info on the "Medieval: Angevins and their Time" page. Except for the novels listed there (most of which I haven't read), I'm not familiar with any Marco Polo novels. If you manage to track down "I Go Marco Polo," please let me know so I can add it to the website!