I am definitely referring to other essays as needed. I wouldn't say, 'I am passionate about providing alternatives to Refund Anticipation Loans to unbanked households (see essay 2)' cause that's annoying and causes a big break. And I haven't explained what the story is with unbanked households who want RALs, so the essay doesn't stand on its own.
But I will do it in order to 1) not seem like a redundant moron and 2) remind readers that there is a larger story in case they read my first essay yesterday and need a bit of a reminder (god, I hope not...that would make me boring...)
So I might say something like, "As I mentioned in the first essay, I took over the tax program after a tumultuous first year." The reader can find out more about the circumstances if they want, or she can keep reading with the understanding that it was tumultuos. Each essay stands on its own, but I have provided a road map for someone who wants more detail.
So yeah, that's just my plan. I can't swear that it works, but there you go.