The whole of March 1951. Hand-entered orders are counted from every day in that range. Shop orders are counted from the 0 days that have been run — 31 days have not: 1951-03-01, 1951-03-02, 1951-03-03, 1951-03-04, 1951-03-05, 1951-03-06, 1951-03-07, 1951-03-08, 1951-03-09, 1951-03-10, 1951-03-11, 1951-03-12, and 19 more.

One page per customer: what to invoice them for, and what they have earned in delivery credit for hosting collections. Shop orders are paid at the checkout, so only hand-entered orders ticked “Invoiced” appear.