U. S. LST Veterans Association

Assuming you're trying to contact former shipmates, the following is suggested:

U. S. LST Veterans Association < http://www.uslst.com/http://www.uslst.com/ >

You'll find info on the ships you listed at the following:

USS MARLBORO (APL-38) & (APB-38)
Ship's history: < http://www.ibiblio.org/hyperwar/USN/ships/dafs/APB/apb38.htmlhttp://www.ibiblio.org/hyperwar/USN/ships/dafs/APB/apb38.html >
Photograph: < http://www.navsource.org/archives/10/1338.htmhttp://www.navsource.org/archives/10/1338.htm >

USS PALAU (CVE-122)
Ship's Nomenclature & History (with links to other sites of interest):
< http://www.ibiblio.org/hyperwar/USN/ships/CVE/CVE-122_Palau.htmlhttp://www.ibiblio.org/hyperwar/USN/ships/CVE/CVE-122_Palau.html >

USS Landing Ship Tank THIRTY-EIGHT (LST-38)
For a concise ship's history, go to < http://www.hazegray.org/danfs/amphib/lst.htmhttp://www.hazegray.org/danfs/amphib/lst.htm >, click on link "LST-1 to LST-50" then scroll down to "LST-38"
(Later converted to a landing craft tender/repair ship and re-christened KRISHNA; excellent color photograph - taken during her service in Vietnam - at: < http://www.usskrishna.com/http://www.usskrishna.com/ >)