Does anywhere on 14th go to Rolling Valley?

Yes.
Why don't you check the "Afternoon slug lines" tab on this site's Home page?
If you did, you'd see the following in an easier to read display:

14th and Constitution

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Location: Washington, near the intersection of 14th Street and Constitution Avenue.


Driving Directions
Description: The location name is a little misleading because this line is not actually on the corner of 14th Street and Constitution. It is about 50 yards south of Constitution on the Washington Monument side of 14th Street and co-located with the bus stop on the sidewalk. Across the street to the east is the National Museum of American History.


Destinations: Springfield area.

Bob’s (or Chi Chi's)
Cardinal Forest
Rolling Valley
Daventry
Mobil Station
Huntsman & Sydenstricker
Best Hours: 4:00 - 5:00 p.m.
It starts forming just prior to 4:00 p.m. and last until about 6:00 p.m.

Drivers: Drivers can only pick up, heading south on 14th Street.

Parking: Meter parking and parking garages

Metro Station: Archives Navy Memorial, 2.5 blocks NE (Green and Yellow Lines) or L’Enfant Plaza 3.5 blocks SE (Blue, Green, Orange, and Yellow lines).

Metrobus routes serving the Archives Navy Memorial station:
13A, 13G (on Constitution Ave. west of 7th, on 7th St. south of Constitution);
13B, 13F, 30, 32, 34, 35, 36 (on Pennsylvania Ave. west of 7th);
54 (on Pennsylvania Ave.);
70, 71 (on 7th St.);
A11 (westbound on Pennsylvania Ave. -- 1 Saturday early AM trip);
A42, A46, A48 (on 10th St. south of Pennsylvania, on Pennsylvania Ave. between 10th and 7th -- non-rail only);
J11, J13 (on Pennsylvania Ave. -- non-rail only);
P1, P2, P6 (all eastbound on Pennsylvania Ave.; P1, P2 westbound on Constitution Ave.; P6 westbound on Pennsylvania Ave.);
P17, P19 (on Pennsylvania Ave. west of 7th, on 7th St. south of Pennsylvania);
V8 (on 9th St. north of Constitution, on Pennsylvania Ave. west of 7th, on 7th St. north of Constitution);
W13 (on Pennsylvania Ave. west of 7th, on 7th St. south of Pennsylvania);

Metrobus routes serving the L'Enfant station: 13A, 13B, 13F, 13G (on 7th St. north of Independence, on Independence Ave. west of 7th);
30, 32, 34, 35, 36 (on 7th St. north of Independence, on Independence Ave. east of 7th);
52, 54 (on D St. east of 7th);
70, 71 (on 7th St. between D and E; 70 also on D and E Sts. east of 7th) NOTE: 70 weekdays only at this station.;
A9 (AM on 7th St. north of D, PM on E St. east of 7th);
P17, P19 (on 7th St. north of Independence, on Independence Ave. east of 7th); V5 (on E St.); V7, V8, V9 (on 7th St. between D and E); W13 (same as P17, P19)
X1 (on Constitution Ave.)

Okay. Let's put the sarcasm aside. I am aware of the 14th and Constitution stop; however, based on my other posts, I'm interested in learning about the stops further up 14th street. I apologize. I should have been more clear.

EMC - you should have been more clear. You also should have only posted your question in one area as opposed to several. (reader and responder fatigue...)

That said, my recommendation is that you try the 14th and NY line to find out whether it goes to RV or not. Talking to people is certainly a good approach, but this system is so fluid that no one can say with 100% certainty what goes on at ALL times, on ALL days, at ALL lines, etc...

I'm afraid you'll just have to take that so called "leap of faith" and give it a shot. Try varying your times, if possible, to see what works. If the line doesn't go to RV, catch a ride to Bob's (then a bus) or walk to 14th & Constitution.

Good luck.

thanks scottt