Color of stop signs

A Google search for "stop signs" color provided the following link (among many others): http://en.wikipedia.org/wiki/Stop_sign

Scroll down to the bottom of the page (there is a lot of white space on the page between sections).

Yes, there were black on yellow stop signs and the very first stop signs were actually black on white and were placed much lower than todays!

So, if you plan on using stop signs on your layout, make sure you have the correct colors for your era! (Check the link).

I've actually noticed 3 common modeling details that were significantly different in the late 40s than our modern versions -- and so, many people modeling this era do them incorrectly.

 First is the stop sign, which you guys have covered.  Yellow with black lettering would be correct for the late 40s.

 Next would be US Postal Service mailboxes.  Many modelers make them blue, as you'd see today.  I don't know the exact year of transition (I believe around 1956 or so), but prior to that, they should be olive drab.

 Last would be fire hydrants.  Many white metal or plastic castings include the rounded cap on the top of a hydrant.  In a good number of photos I've seen ranging from about 42-52, hydrants came in two varieties.  Not sure when one was used over the other.  I have a photo of the shorter hydrants missing this rounded cap taken in 1949.  I'll see if I can post it.