0000950136-06-003074 8-K 4 20060417 4.01 9.01 20060421 20060421 ALAMOSA DELAWARE INC 0001097722 3663 752843707 DE 1231 8-K 34 001-15657 06771917 5225 S LOOP 289 LUBBOCK TX 79407 8067221100 5225 S LOOP 289 LUBBOCK TX 79407 8-K 1 file001.htm FORM 8-K GRAPHIC 2 ebox.gif GRAPHIC GRAPHIC 3 spacer.gif GRAPHIC EX-16 4 file002.htm LETTER