This book or pdf shows that there are a lot af safety razors. Really a lot, it's amazing.
It is nice to look in it and it gives some information and nice photo's & drawings. The quality is great and you can zoom into details without blur.
If you put a number for getting a page, you get another page so you have to scroll a few pages more or less. That's not so bad but not good either.
In general i find it very superficial, the information is poor.
I rather had more details about the constructions and kind of metals they used for the razors. Adresses where they are made might be interesting for historians but i don't really car about that, maybe because i am european and don't know most of the places. For Gillettes, this is absolutely incomplete. Same for Some other major brands that i have in my little collection. It is a bit frustrating.
For me it is like a encyclopedia rather than something where i can actualy look up deeply and that is a bit disappointing. However, i think that's the best there is in this matter. I also realise that the book i want would be one with thousants of pages, maybe i am just a maniac.
Thank you for your attention.