The whole of April 1931. Hand-entered orders are counted from every day in that range. Shop orders are counted from the 0 days that have been run — 30 days have not: 1931-04-01, 1931-04-02, 1931-04-03, 1931-04-04, 1931-04-05, 1931-04-06, 1931-04-07, 1931-04-08, 1931-04-09, 1931-04-10, 1931-04-11, 1931-04-12, and 18 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.