Wow, this will make you choke. The ad is from January 26th, 1969 in the Washington Post.
![1500 Mass. Ave advertisement - January 26th, 1969 (Washington Post)](https://ghostsofdc.org/wp-content/uploads/sites/7/2013/03/Screen-Shot-2013-03-10-at-5.58.36-PM.png)
You know the building. You’ve probably passed it many times, or maybe you know someone that lives there. Check it out on Google Street View.
[googlemaps https://maps.google.com/maps?ie=UTF8&ll=38.906931,-77.035446&spn=0.047755,0.039997&t=m&z=14&layer=c&cbll=38.906869,-77.035465&panoid=h_2QTt9IuzrC-JM66yUo7Q&cbp=12,183.33,,0,-16.22&source=embed&output=svembed]