'Ēkkasān prakō̜p kānprachum chœ̄ng pattipatkān rư̄ang Nayōbāi læ botbāt khō̜ng Krasūang Rǣngngān læ Sawatdīkān Sangkhom = Workshop on "The role and policies of the Ministry of Labour and Social Welfare"
Saphāp sētthakit khō̜ng Thai ratchasamai Ratchakān thī 4 læ Ratchakān thī 5 čhāk ʻēkkasān chan ton rūam samai khō̜ng Thai = Economic conditions of Siam in the reigns of King Mongkut and King Chalalongkorn from contemporary documents