Hi Thom,
If you want a new owner's manual for your car, the MB part number is:
For 250/280 SL (1966-71), in English: 6510 9119 02
Price in Germany: 22 euros (around 25 US Dollars)
I think you can order it through your local MB dealer, or you can order it through the MB Classic Center USA (32.99 US Dollars):
http://www.thecollection.mbusa.com/Accessories/catalog/Product.jhtml?PRODID=1126&CATID=413&clearAttribute=trueIn any case you can have more information in:
SERVICE-HOTLINEDaimlerChrysler AG
Mercedes-Benz Classic Center
Dispatch Service ”Technical Literature / EVO”
Service telephone : +49-(0)7 11-17-8 32 93
Service fax : +49-(0)7 11-17-8 30 86
Email: classic.literatur@daimlerchrysler.com
You can contact them Mondays to Fridays from 09.00am to 12.00am and from 2.00pm to 5.00pm.
Regards,
Albert de la Torre Chavalera
Barcelona (Catalunya/Spain)
Feb.'64 230 SL Euro 113042-10-002432