architectural drafting symbols

Where can I find a group of architectural drafting symbols such as section cuts, detail symbol, room number, window number, door number, etc?

 

Or build them from scratch using your existing text styles. To get
consistency you will want to modify at least the text to match your current
standards anyway. I spent a few hours total doing a whole library of symbols
for an office I am setting up. Not a horrible amount of time, and when
combined with Tool Palettes to control layer and scale, my time will pay for
itself within just a few weeks of work by a staff of 5.
Or it is that you want a reference of what all the symbols look like and how
many there are, more than just wanted a pre digested library? IN that case,
I find 'Architectural Graphic Standards' and 'The Professional Practice of
Architectural Working Drawings' to be the best treeware resources.

Best,
Gordon