Well, for the Norfolk, I don't have one but its 3 1/4" closed and made by GEC. I believe, based on my experiences with GEC's #33 which is 3 3/8" closed, you're looking at a max length of 2 1/2" main blade, tip to bolster. The #53 you mention is almost an inch longer and probably twice as heavy. I don't have comparison shots of all those but here are a few I hope help. There are a couple Northwoods Norfolk threads, here is the first and largest one
http://www.bladeforums.com/forums/showthread.php/1111810-Northwoods-Norfolk-has-landed!?
This pic is of pen knives I have/had with a straight edged main blade sorted by largest closed at the top. There's the GEC #62, Case/Bose Norfolk, GEC #61, and Case SBJ. I believe the Northwoods Norfolk will be in between the #61 and SBJ based on closed length but with a blade length closer to the #62. I haven't carried the #62 but I have 3 #61 users. I would carry this one as a "dirty knife" in the office that I would open packages and stuff with. I carried a second larger single blade knife that I would cut food with if I needed to.
Here are the #66, #81, #82, and #53. The #68 should be similar to the #66 but with a straight handle instead of serpentine. Of these, my favorites are the larger (but narrower feeling) #53 and #82.
And here are some wharncliffe trappers. The Hawthorn isn't pictured but its based on the GEC #48 which the top knife is. Followed by the #74, Case/Bose Wharncliffe trapper, and a Case Mini Wharncliffe Trapper. The #48 is my favorite pattern from GEC. I like the feel of the Case Mini next but the #48 is pretty much the only one I carry. At 3 7/8" closed, it isn't too big for me but still gives me main blades just over 3 inches long. To be fair, I tend to carry the jacks more than the other #48s.
Other knives to keep an eye out for would be the Queen/Dan Burke Barlow. It has a shorter wharncliffe secondary. They sold out years ago though. I'm also a fan of the Queen #26 Medium Stockman at 3 3/8" closed. Smaller and narrower than the #66 above but plenty large for any office chores. Both of these are in D2.