>>So far, my results have either wound up with 3 Customers(cutting out 2 and 5) or 8 Customers because of the duplicates. I know this shouldn't be that hard, but I'm not seeing what I missed.
>
>

select t1.customer, t2.date, t3.size ;
> from customer t1 ;
>  left join orders t2 on t1.custID = t2.custID ;
>     and t2.date = (select max(date) from orders o1 where o1.cust_id = t2.custid ) ;
>  left join lookup t3 on t2.amount = t3.amount

Cetin

When I tried it in this format, I got the error 'SQL: Subquery nesting is too deep.' I moved it to a WHERE clause and essentially got Sergey's answer, except his gave the error 'SQL expression is too complex.' In both of them, the MAX(date) is excluding the blank records, which I need to keep.

After a night's sleep, a fresh look at the problem, I broke it out into two queries.