How about new ones here: **LINK**
As for 'Are they worth a read?' I re-read mine regularly, but they are not everyone's cup of tea. They are a collection of discreet articles that are re-prints from the American Machinist magazine, and are informative & interesting. How Bill Osbourne describes the countryside, the way the machine shops worked and all sorts of anecdotes which can often be classified under a number of general headings like : 'Idiot customers', 'I'm an idiot sometimes', 'No, no, don't do that!' and 'Gremlins'.
I looked up the area he describes. The machine shop no-longer exists, but is remembered in the street name, 'Machinist's Road' and the city of 'Pit Hole' he talks about once or twice was once the area of highest land values anywhere in the US, however the last building in the city was demolished in 1968. Google Earth shows the street layout over a green field.
I thoroughly enjoyed the series.
Regards,
Richard