Thanks, i have been wanting to read his book for a while. On the side note, is this book free? if it is not i would like to buy it sometime. I am also wonderi

Thanks, i have been wanting to read his book for a while. On the side note, is this book free? if it is not i would like to buy it sometime. I am also wondering , Richard Hamming has died in 1998 right? if his books is distributed electronically (like in ebooks) is it violating his copyright? (i don't really understand about ebooks copyright)