Report on the lunar ranging at McDonald Observatory for the period 1 February 1976 to 31 May 1976

The four spring lunations produced 105 acquisitions, including the 2000th range measurement made at McDonald Observatory. Statistics were normal for the spring months. Laser and electronics problems are noted. The Loran-C station delay was corrected. Preliminary "doubles" data is shown. New magnetic tape data formats are presented. R&D efforts include a new laser modification design