Conclusion

The history of early American Cinema has continued to sustain an interest film studies because the technologies that emerged throughout this period has enabled the development of film aesthetic and form elements.
The blog has covered a range of aspects to screen, colour and sound technologies, which had significant social, cultural, economic and industrial impacts on cinema. The Hollywood system would not have existed without the evolution of these technologies.
One of the interesting aspect to the history of film technology is the shift of major players with Fox and Warners Bros. overtaking the key studios at the time because they were willing to take the risks.
There is a great deal of information linked into the postings from a range of websites, but the wikipedia entries are detailed and precise, particularly about widescreen. For those skeptical of wiki, I would recommend following up any of the books recommended or cited in the blog postings.