A note from Little Moonbeam's father

 is a note Sydney's father left her when he was dying in the Statesman Hotel. If you give it to her after she tells you her story, she will give you Sydney's 10mm "Ultra" SMG.

Location

 * Note: If you've already saved Reilly's Rangers then access will be blocked if taking the bridge from Our Lady of Hope Hospital. Having already repaired the elevator, map-hop to the Statesman Hotel street entrance and take it to the top floor, then work your way down from there.
 * It can be found on the third and uppermost floor of Statesman Hotel Mid Level, close to the center. Just south of the marker for the Statesman Hotel Restaurant elevator (but behind a wall, so not directly accessible).
 * The room number appears to be 107, or 307 (but that appears be the room number of every room, at least on this level). If you are facing the elevator doors that take you to the Restaurant, you are facing north, and the room you're looking for is the first to the southeast. This room has 2 entrances. Against the west wall are 2 bedrooms (though the wall between them is blown out). There is a queen size bed on the left and a single/twin on the right. The bed on the right is where you can find the skeleton, weapon, ammo, and the tape. (Note: this description of the location is not useful if you have not already saved Reilly's Rangers).
 * As stated above, it is on the 3rd floor of the hotel's Mid Level. If you are making your way up to Reilly's Rangers for the first time, it is two floors above Theo. The room is the first door to the left (facing north looking down the corridor immediately after leaving the stairwell to that upper floor). The door is directly opposite a locked door. The locked door is a storage closet (easy difficulty) with ammo and med supplies. Just beyond the storage closet is a side-by-side fire hose and med station on the wall. Once you enter the hotel room, just look for the illuminated bedroom.

Transcription

 * Length: 00:52:2 seconds
 * Author: Sydney's Father