This manuscript was originally published with three errors.
The first error was to the author affiliation, which was originally published as ‘CREA-AA Padova Laboratorio di Gelsobachicoltura, Italy’ has been updated so that the acronym is spelled out. The correct affiliation is ‘Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Laboratorio di Gelsibachicoltura, Italy’.
The second update is that the caption for Figure 2 has now been attributed to Fabio Forgione and the corrected caption reads ‘Figure 2. Letterhead of Ing. (Engineer) Luigi Frigerio’s sericulture company in 1915, displaying multiple medals and stamps commemorating awards won by the company, listing its three establishments, and featuring the inscription ‘Emancipation from Japan’. Frigerio to Verson, 15 October 1915, CREA-AA Padova, Laboratorio di Gelsibachicoltura (CPLG), 6. (Fabio Forgione)’.
Finally, the author omitted to mention a contribution from the Acknowledgment section. The missing sentence is: ‘I also thank the CREA Padua and ARACNE team for their hospitality, Diana Mantegazza for assisting me with the graphics, and Fabio Forgione.’
The author apologises for these errors.