This forum has a wealth of information in that regard. You might try House Handles or Tennessee Hickory for a good quality haft; although, some shaping may be required. Generally, you want to seat the head fairly low on the shoulders of the haft and leave approx. 1/4" of it "proud." This causes the top portion of the haft to spread when the wood wedge is driven home, creating a very tight fit. If done correctly, you will not need auxiliary steel wedges, just the main wood wedge. You could then soak the head in BLO (boiled linseed oil) for a while. Post any questions you have. There are many members here who have a lot more experience than I do and they will give you good advice. Kelly True Temper axe heads are very good quality. Congratulations on making the effort to restore an old axe and put it back in service. Good luck.