I got lost in this book, my action is to get physical bibliographies now. Thanks for good definitions for a man I give homage to daily. He truly had a drive to make more than just lighting. I’m sure inventors do lab courses with some of his prototypes in class. I think from the knowing of signature’s (my name that is) he surely is a gifted man; the sketches look like he was educative and inclined to see future completions with some type of imaginative thinking.