Here's a list compiled with reference to the Takeda Juku route for modern Japanese: The ones in good condition are: Kanji Master 1800 The Amazing Technique of Modern Japanese in the Shortest 10 Hours... Common Test Modern Japanese Practical Countermeasure Problem Collection Words are Power Tamura's Easy-to-Understand Modern Japanese The ones with some signs of use are: Modern Japanese Keyword Reading Comprehension Deguchi's Modern Japanese Revolution The ones that might be in good condition if the covers are removed are: Funaguchi's Strongest Modern Japanese Decoding from Zero Kimeru Center Modern Japanese Thank you. I've tried to check for any writing, but I apologize if I missed anything.