" I think the "are found" is a little odd - they'll be found if you look for them. #2 sounds more like an order: Go find them there! How do you feel about #1 with either of the changes suggested?
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AnnvanThanks so much for your input, Barbara and Marius! "Can be found..." is a good option, I think. As far as I can remember (will have to check next time I see the student), this comes from text giving instructions. So, "...are to be found..." is also possible? How would you categorize this grammatically? Passive infinitive?