The second letter home is also not dated, as later letters all are. The evening of May 8th is the postal stamp, so the letter was likely written earlier in the same day.
In this letter, Chuck mentions Maydean. Maydean is his sister (again, taking into consideration he was adopted, so not a sister by blood…but by family). Also, he asks his adoptive father, Frank, about his current job. Taking note of the way the letter is addressed, Frank was likely doing contracting work of some kind with the railroad. An “Extra Gang” was the term used for seasonal rail workers, from months April to November. Frank was a businessman, with a knack for telecommunications. He would not have been working as a laborer, as the address may imply. This is the only letter addressed in this way.