Ok, I know this has been at least partly covered in a couple of other threads, such as http://www.woodworkingtalk.com/f11/sharpening-sandpaper-47029/index2/ and here http://www.woodworkingtalk.com/f11/sharpening-44076/, but I thought it would be beneficial to have a slightly more focused discussion/reference to videos, books, other resources, etc., in addition to direct advise, on sharpening gouges. As some of you may recall, I won a 1914 carpenter's chest at auction, full of tools from that period. Included in the chest was a beautiful set of Buck Bros. gouges; mostly out-cannel but one in-cannel as well. As a way of saving $, promoting my hobby and giving my relatives mediocre Christmas presents, I'm making a series of banana stands from scrap western red cedar, and the design I have in mind would benefit from use of the gouges. So I need to figure out how to sharpen them effectively. (This is obviously right up Robson's V"alley", so I look forward to input from him).
Here's a picture of the gouges (on the right):
A word about my sharpening supplies. I have an eclipse jig (useless in this application I'm sure), a very low grit diamond plate, some intermediate two-sided stones of a variety that water soaks into them, an extra fine diamond plate, a razor hone and assorted wet-dry sand paper. I am fine with buying (a relatively inexpensive) additional item for this, e.g. a slip stone or something if it would make things easier.
I tried using a pencil with sand paper of a medium grit wrapped around to see if i could make any progress, but didn't. I also tried free-hand on the extra fine plate, rotating for each stroke, just to get an idea of technique that might work but gave it up.
These gouges look as though they've been sharpened (not terribly well - all the other chisels in the box are quite convex, have a slight back bevel and are uneven across the edge - this guy was obviously more interested in getting the job done than messing around with sharpening). They don't look like they've ever been ground. I may need to do that but am hesitant for fear of fouling them up. Also, it looks like one lost its temper half way up - seems quite far to me. If that is in fact the case, is there anything I can do about it?
This is such a long post I am afraid the replies will be low. What I'm really looking for is advice on technique for getting these into shape.
Thanks.
Here's a picture of the gouges (on the right):

A word about my sharpening supplies. I have an eclipse jig (useless in this application I'm sure), a very low grit diamond plate, some intermediate two-sided stones of a variety that water soaks into them, an extra fine diamond plate, a razor hone and assorted wet-dry sand paper. I am fine with buying (a relatively inexpensive) additional item for this, e.g. a slip stone or something if it would make things easier.
I tried using a pencil with sand paper of a medium grit wrapped around to see if i could make any progress, but didn't. I also tried free-hand on the extra fine plate, rotating for each stroke, just to get an idea of technique that might work but gave it up.
These gouges look as though they've been sharpened (not terribly well - all the other chisels in the box are quite convex, have a slight back bevel and are uneven across the edge - this guy was obviously more interested in getting the job done than messing around with sharpening). They don't look like they've ever been ground. I may need to do that but am hesitant for fear of fouling them up. Also, it looks like one lost its temper half way up - seems quite far to me. If that is in fact the case, is there anything I can do about it?
This is such a long post I am afraid the replies will be low. What I'm really looking for is advice on technique for getting these into shape.
Thanks.