Some good articles on wire antennas by K9AUB

Some good articles on wire antennas by K9AUB:

5/8 Wave Vertical Antenna (K9AUB)    
A High-Performance 1-Wire DX Antenna

Multi-band Wire Antennas (K9AUB)    
Multi-band Wire Antennas

Variations of a Half Wave Dipole (K9AUB)    
Variations of a Half Wave Dipole 

Choosing Feed Line (K9AUB)    
Choosing the Proper Feed Line for Antennas

Practical Antennas (K9AUB)    
Practical Antennas for Practical Ham

http://www.k9mce.org/articles.html