Notes and extracts taken mainly out of records and from printed sources (e.g. Smith: Wealth of Nations) relating to finance, revenue, commodities of trade, agricultural products, forests, vineyards, population, etc.

'Cynghorion Tad iddei Fab, ynghylch trin Perllanau, a Gwinllanau. (O Lyfr Thomas Hopcin o Langrallo, ym Morganwg)' in the autograph of Edward Williams ('Iolo Morganwg').