Optimizing html Code

I've been out checking pages that have not been updated in a while, adding a Google Search Bar. On some of the pages I also check its status via Google Analytics ~ see how the page is doing.

I have 4 pages covering SGI interface pinouts, which also happen to be obsolete. They don't bring in much traffic, but the visits are pretty constant.
Silicon Graphics Inc [SGI] Monitor Port on a D-Sub 15 pin connector.
Silicon Graphics Inc [SGI] Digital Video Port for the O2Cam.
Silicon Graphics Inc [SGI] Digital Video Monitor Port with a DB-9 pin Connector.
Silicon Graphics Inc [SGI] Flat Panel Monitor Port for a Presenter 1280.
Those pages only list connector pinouts, some use the term Signal Assignments.

Another page I checked of interest was the Military Circular Connector page for MIL-DTL-83723 Connectors. This page helps to decode the part number, or generate one. A related page covering measuring EMI for Military users is MIL-STD-462. The MIL-462 page is linked of the Military Specifications page. While the MIL-83723 page is listed on the Military Spec Connectors page. However its link seems to be missing from the page that lists Military Connector Manufacturers page ~ I'll add it tonight.

These are minor up-dates, no content. I'm really just checking the pages and add the search bar, that is about it..

Then I see this page that covers Frequency Range vs Circular Connector Type. Hmm, only gets a few hits a day.....